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1940 United States House of Representatives elections

House elections for the 77th U.S. Congress

Field	Value
election_name	1940 United States House of Representatives elections
country	United States
flag_year	1912
type	legislative
ongoing	no
previous_election	1938 United States House of Representatives elections
previous_year	1938
next_election	1942 United States House of Representatives elections
next_year	1942
outgoing_members	76th United States Congress#House of Representatives_3
elected_members	77th United States Congress#House of Representatives_3
seats_for_election	All 435 seats in the United States House of Representatives
majority_seats	218
election_date	November 5, 1940
image_size	x180px
image1	Sam Rayburn.jpg
leader1	Sam Rayburn
leader_since1	September 16, 1940
party1	Democratic Party (US)
leaders_seat1
last_election1	262 seats
seats1	267
seat_change1	5
popular_vote1	24,227,821
percentage1	51.4%
swing1	2.7
image2	Joseph W. Martin LCCN2016876937 (3).jpg
leader2	Joseph Martin
leader_since2	January 3, 1939
party2	Republican Party (US)
leaders_seat2
last_election2	169 seats
seats2	162
seat_change2	7
popular_vote2	21,490,392
percentage2	45.6%
swing2	1.9
party4	Wisconsin Progressive Party
<!--small parties do not need leaders posted here-->	last_election4	2 seats
seats4	3
seat_change4	1
popular_vote4	477,435
percentage4	1.0%
swing4
party5	American Labor Party
<!--small parties do not need leaders posted here-->	last_election5	1 seat
seats5	1
seat_change5
popular_vote5	338,770
percentage5	0.7%
swing5
party7	Farmer–Labor Party
<!--small parties do not need leaders posted here-->	last_election7	1 seat
seats7	1
seat_change7
popular_vote7	298,250
percentage7	0.6%
swing7	0.3
party8	Independent
<!--small parties do not need leaders posted here-->	last_election8	0 seats
seats8	1
seat_change8	1
popular_vote8	113,497
percentage8	0.2%
swing8
title	Speaker
before_election	Sam Rayburn
before_party	Democratic Party (US)
after_election	Sam Rayburn
after_party	Democratic Party (US)
map_image	1940 United States House elections.svg
map_size	320px

The 1940 United States House of Representatives elections were elections for the United States House of Representatives to elect members to serve in the 77th United States Congress. They were held for the most part on November 5, 1940, while Maine held theirs on September 9. They coincided with President Franklin D. Roosevelt's re-election to an unprecedented third term. His Democratic Party narrowly gained seats from the opposition Republican Party, cementing their majority. However, the election gave firm control of the US House of Representatives and Senate to the New Dealers once again, as Progressives dominated the election.

The upswing in the economy that occurred following the Recession of 1937–38 encouraged voters that the New Deal plan had been working. This allowed the Democrats to stabilize their support.

As of 2024, this was the last time the House of Representatives was made up of six parties.

Overall results

Democratic Party (US)}}" Democratic		Republican Party (US)}}" Republican

Total seats (change)	Seat percentage	Vote percentage	Popular vote	Totals	435
Democratic Party	267	5	61.3%	51.4%	24,227,821
Republican Party	162	7	37.2%	45.6%	21,490,392
Progressive Party	3	1	0.6%	1.0%	477,435
American Labor Party	1		0.2%	0.7%	338,770
Farmer–Labor Party	1		0.2%	0.6%	298,250
Independents	1	1	0.2%	0.2%	113,497
Communist Party	0		0.0%	0.2%	95,173
Prohibition Party	0		0.0%	0.1%	62,504
Socialist Party	0		0.0%		19,782
Socialist Labor Party	0		0.0%		6,403
Union Party	0		0.8%		6,401
Liberal Party	0		0.0%		2,256
Fusion Party	0		0.0%		2,014
No Wage Tax Party	0		0.0%		864
Workers Party	0		0.0%		411
Buono Food Plan Party	0		0.0%		375
Peace Party	0		0.0%		341
States' Rights Party	0		0.0%		270
Keep America Neutral Party	0		0.0%		128
Roosevelt New Deal Party	0		0.0%		98
The American Way Party	0		0.0%		65
Others	0		0.0%		5,578

Source: Election Statistics - Office of the Clerk

Results shaded according to winning candidate's share of the popular vote

House seats by party holding plurality in state

Net gain in states

Special elections

Many special elections were held. The elected winner would serve only the remainder of the incumbent Congress. Sorted by election date.

|- ! | William I. Sirovich | | Democratic | 1926 | | Incumbent died December 17, 1939. New member elected February 6, 1940. Democratic hold. Winner was later re-elected to the next term; see below. | nowrap | {{Plainlist|

Morris Michael Edelstein (Democratic) 57.08%
Lois J. Lefkowitz (Republican) 29.35%
Earl Browder (Communist) 13.56%

|- ! | Wallace E. Pierce | | Republican | 1938 | | Incumbent died January 3, 1940. New member elected February 13, 1940. Republican hold. Winner was later re-elected to the next term; see below. | nowrap | {{Plainlist|

Clarence E. Kilburn (Republican) 70.26%
M. Henry McGillic (Democratic) 29.74%

|- ! | Wallace E. Pierce | | Democratic | 1934 | | Incumbent resigned January 2, 1940. New member elected February 15, 1940. Democratic hold. Winner was later re-elected to the next term; see below. | nowrap | {{Plainlist|

Clifford Davis (Democratic) 93.5%
Ralph A. Picard (Democratic) 4.78%
Tom Collier (Independent) 1.60%
Theodore W. Larwill (Independent) 0.11%

|- ! | Carl Mapes | | Republican | 1912 | | Incumbent died December 12, 1939. New member elected February 19, 1940. Republican hold. Winner was later re-elected to the next term; see below. | nowrap | {{Plainlist|

Bartel J. Jonkman (Republican) 58.61%
William R. McCaslin (Democratic) 41.39%

|- ! | Edward W. Curley | | Democratic | 1934 | | Incumbent died January 6, 1940. New member elected February 20, 1940. Democratic hold. Winner was later re-elected to the next term; see below. | nowrap | {{Plainlist|

Walter A. Lynch (Democratic) 89.06%
Arthur D. Fisher (Republican) 10.94%

|- ! | William A. Ashbrook | | Democratic | 1906 1920 (lost) 1934 | | Incumbent died January 1, 1940. New member elected February 27, 1940. Republican gain. Winner was later re-elected to the next term; see below. | nowrap | {{Plainlist|

J. Harry McGregor (Republican) 54.48%
Byron Ashbrook (Democratic) 45.52%

|- ! | Chester C. Bolton | | Republican | 1928 1936 (lost) 1938 | | Incumbent died October 29, 1939. New member elected February 27, 1940. Republican hold. Winner was later re-elected to the next term; see below. | nowrap | {{Plainlist|

**Frances P. Bolton ** (Republican) 62.69%
Anthony A. Fleger (Democratic) 37.31%

|- ! | Cassius C. Dowell | | Republican | 1936 | | Incumbent died February 4, 1940. New member elected March 5, 1940. Republican hold. Winner was later re-elected to the next term; see below. | nowrap | {{Plainlist|

Robert K. Goodwin (Republican) 60.28%
Bryan Allen (Democratic) 38.93%

|- ! | George H. Heinke | | Republican | 1938 | | Incumbent died January 2, 1940. New member elected April 19, 1940. Republican hold. Winner did not run for election to the next term; see below. | nowrap | {{Plainlist|

John Hyde Sweet (Republican) 56.15%
Charles A. Dafoe (Democratic) 43.85%

|- ! | Clyde H. Smith | | Republican | 1936 | | Incumbent died April 8, 1940. New member elected June 3, 1940. Republican hold. Winner was later re-elected to the next term; see below. | nowrap | {{Plainlist|

Margaret Chase Smith (Republican)
Uncontested

|- ! | W. Benjamin Gibbs | | Democratic | 1938 | | Incumbent died August 7, 1940. New member elected October 1, 1940. Democratic hold. Winner did not run for election to the next term; see below. | nowrap | {{Plainlist|

Florence Reville Gibbs (Democratic)
Uncontested

|- ! | William B. Bankhead | | Democratic | 1916 | | Incumbent died September 15, 1940. New member elected November 5, 1940. Democratic hold. Winner did not run for election to the next term; see below. | nowrap | {{Plainlist|

Zadoc L. Weatherford (Democratic)
Uncontested

|- ! | John Andrew Martin | | Democratic | 1908 1912 (retired) 1932 | | Incumbent died December 23, 1939. New member elected November 5, 1940. Democratic hold. Winner did not run for election to the next term; see below. | nowrap | {{Plainlist|

William E. Burney (Democratic) 51.0%
Henry Leonard (Republican) 49.1%

Alabama

|- ! | Frank W. Boykin | | Democratic | 1935 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Frank W. Boykin (Democratic)
Uncontested

|- ! | George M. Grant | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

George M. Grant (Democratic)
Uncontested

|- ! | Henry B. Steagall | | Democratic | 1914 | Incumbent re-elected. | nowrap | {{Plainlist|

Henry B. Steagall (Democratic) 99.6%
Thomas G. McNaron (Republican) 0.4%

|- ! | Sam Hobbs | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Sam Hobbs (Democratic) 87.9%
Thomas G. McNaron (Republican) 12.1%

|- ! | Joe Starnes | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Joe Starnes (Democratic) 100.0%

|- ! | Pete Jarman | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Pete Jarman (Democratic)
Uncontested

|- ! | William B. Bankhead | | Democratic | 1916 | | Incumbent died September 15, 1940. Democratic hold. | nowrap | {{Plainlist|

Walter W. Bankhead (Democratic) 70.9%
A. W. Hargett (Republican) 29.1%

|- ! | John Sparkman | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

John Sparkman (Democratic)
Uncontested

|- ! | Luther Patrick | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Luther Patrick (Democratic) 99.1%
W. A. Denson (Independent) 0.9%

Arizona

80–90%}}

|- ! | John R. Murdock | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

John R. Murdock (Democratic) 71.1%
K. T. Palmer (Republican) 28.9%

Arkansas

|- ! | Ezekiel C. Gathings | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Ezekiel C. Gathings (Democratic)
Uncontested

|- ! | Wilbur Mills | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Wilbur Mills (Democratic)
Uncontested

|- ! | Clyde T. Ellis | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Clyde T. Ellis (Democratic) 71.1%
Claude M. Williams (Republican) 28.9%

|- ! | William Fadjo Cravens | | Democratic | 1939 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

William Fadjo Cravens (Democratic)
Uncontested

|- ! | David D. Terry | | Democratic | 1933 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

David D. Terry (Democratic)
Uncontested

|- ! | William F. Norrell | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

William F. Norrell (Democratic)
Uncontested

|- ! | Wade H. Kitchens | | Democratic | 1936 | | Incumbent lost renomination. Democratic hold. | nowrap | {{Plainlist|

Oren Harris (Democratic)
Uncontested

California

Main article: 1940 United States House of Representatives elections in California

|- ! | Clarence F. Lea | | Democratic | 1916 | Incumbent re-elected. | nowrap | {{Plainlist|

Clarence F. Lea (Democratic) 93.3%
Albert J. Lima (Communist) 5.1%
Ernest S. Mitchell (Write-in) 1.6%

|- ! | Harry Lane Englebright | | Republican | 1926 | Incumbent re-elected. | nowrap | {{Plainlist|

Harry Lane Englebright (Republican)
Uncontested

|- ! | Frank H. Buck | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Frank H. Buck (Democratic) 91.0%
C. H. Farman (Prohibition) 7.1%
Charles Gricus (Communist) 1.8%

|- ! | Franck R. Havenner | | Democratic | 1936 | | Incumbent lost re-election. Republican gain. | nowrap | {{Plainlist|

Thomas Rolph (Republican) 54.6%
Franck R. Havenner (Democratic) 44.4%
Archie Brown (Communist) 1.0%

|- ! | Richard J. Welch | | Republican | 1926 | Incumbent re-elected. | nowrap | {{Plainlist|

Richard J. Welch (Republican) 95.8%
Walter R. Lambert (Communist) 4.2%

|- ! | Albert E. Carter | | Republican | 1924 | Incumbent re-elected. | nowrap | {{Plainlist|

Albert E. Carter (Republican) 96.0%
Clarence Paton (Communist) 4.0%

|- ! | John H. Tolan | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

John H. Tolan (Democratic) 55.5%
Ralph R. Eltse (Republican) 43.2%
Alfred N. Johnson (Communist) 1.3%

|- ! | Jack Z. Anderson | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Jack Z. Anderson (Republican) 96.6%
Elizabeth Nicholas (Communist) 3.4%
John J. McGrath (Write-in) 0.02%

|- ! | Bertrand W. Gearhart | | Republican | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Bertrand W. Gearhart (Republican)
Uncontested

|- ! | Alfred J. Elliott | | Democratic | 1937 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Alfred J. Elliott (Democratic) 97.0%
Louretta Adams (Communist) 3.0%

|- ! | John Carl Hinshaw | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

John Carl Hinshaw (Republican) 96.6%
Orla E. Lair (Communist) 3.4%

|- ! | Jerry Voorhis | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Jerry Voorhis (Democratic) 64.0%
Irwin W. Minger (Republican) 35.2%
Albert Lewis (Communist) 0.7%

|- ! | Charles Kramer | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Charles Kramer (Democratic) 75.7%
Charles Hiram Randall (Prohibition) 21.7%
Celeste Strack (Communist) 2.6%

|- ! | Thomas F. Ford | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Thomas F. Ford (Democratic) 64.3%
Herbert L. Herberts (Republican) 33.3%
Pettis Perry (Communist) 2.4%

|- ! | John M. Costello | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

John M. Costello (Democratic) 56.2%
Norris J. Nelson (Republican) 42.6%
Emil Freed (Communist) 1.2%

|- ! | Leland M. Ford | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Leland M. Ford (Republican) 96.4%
George C. Sandy (Communist) 3.6%

|- ! | Lee E. Geyer | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Lee E. Geyer (Democratic) 65.5%
Clifton A. Hix (Republican) 28.6%
Samuel C. Converse (Progressive) 4.9%
Harry L. Gray (Communist) 1.0%

|- ! | Thomas M. Eaton | | Republican | 1938 | | Incumbent died September 16, 1939. Republican hold. | nowrap | {{Plainlist|

William Ward Johnson (Republican) 54.3%
Byron N. Scott (Democratic) 44.7%
George R. Ashby (Communist) 1.0%

|- ! | Harry R. Sheppard | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Harry R. Sheppard (Democratic) 52.9%
Lotus H. Loudon (Republican) 47.1%

|- ! | Edouard Izac | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Edouard Izac (Democratic) 51.1%
Ed Fletcher (Republican) 48.3%
Esco L. Richardson (Communist) 0.6%

Colorado

|- ! | Lawrence Lewis | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Lawrence Lewis (Democratic) 64.6%
James D. Parriott (Republican) 34.9%
Ward Rogers (Socialist) 0.3%
James Allander (Communist) 0.2%

|- ! | Fred N. Cummings | | Democratic | 1932 | | Incumbent lost re-election. Republican gain. | nowrap | {{Plainlist|

William S. Hill (Republican) 53.2%
Fred N. Cummings (Democratic) 46.2%
Henry Neumann (Socialist) 0.3%
Robert F. Billings (Peace) 0.2%

|- ! | John Andrew Martin | | Democratic | 1932 | | Incumbent died December 23, 1939. Republican gain. Winner did not run to finish the current term. | nowrap | {{Plainlist|

John Chenoweth (Republican) 52.0%
Byron G. Rogers (Democratic) 48.0%

|- ! | Edward T. Taylor | | Democratic | 1908 | Incumbent re-elected. | nowrap | {{Plainlist|

Edward T. Taylor (Democratic) 59.4%
Paul W. Crawford (Republican) 40.6%

Connecticut

|- ! | William J. Miller | | Republican | 1938 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

Herman P. Kopplemann (Democratic) 54.2%
William J. Miller (Republican) 45.8%

|- ! | Thomas R. Ball | | Republican | 1938 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

William J. Fitzgerald (Democratic) 52.4%
Thomas R. Ball (Republican) 47.3%
John R. McHale (Socialist) 0.3%

|- ! | James A. Shanley | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

James A. Shanley (Democratic) 53.6%
Ranulf Compton (Republican) 46.4%

|- ! | Albert E. Austin | | Republican | 1938 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

Le Roy D. Downs (Democratic) 49.1%
Albert E. Austin (Republican) 48.6%
George Moffatt (Socialist) 2.3%

|- ! | J. Joseph Smith | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

J. Joseph Smith (Democratic) 54.9%
Frank T. Johnson (Republican) 44.7%
John W. Ring (Socialist) 0.4%

|- ! | B. J. Monkiewicz | | Republican | 1938 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

Lucien J. Maciora (Democratic) 52.1%
B. J. Monkiewicz (Republican) 46.7%
Bellani Trombley (Socialist) 0.8%
Andrew Jacob Jr. (Socialist Labor) 0.2%
Oscar W. Nelson (Union) 0.1%

Delaware

|- ! | George S. Williams | | Republican | 1938 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

Philip A. Traynor (Democratic) 50.6%
George S. Williams (Republican) 47.8%
Royden C. Caulk (Liberal Dem.) 1.6%

Florida

|- ! | J. Hardin Peterson | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

J. Hardin Peterson (Democratic)
Uncontested

|- ! | Robert A. Green | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Robert A. Green (Democratic) 89.1%
Francis McHale (Republican) 10.9%

|- ! | Millard Caldwell | | Democratic | 1932 | | Incumbent retired to run for U.S. senator. Democratic hold. | nowrap | {{Plainlist|

Bob Sikes (Democratic)
Uncontested

|- ! | Pat Cannon | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Pat Cannon (Democratic) 75.3%
Bert L. Acker (Republican) 24.7%

|- ! | Joe Hendricks | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Joe Hendricks (Democratic) 75.4%
Emory Akerman (Republican) 24.6%

Georgia

|- ! | Hugh Peterson | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Hugh Peterson (Democratic) 99.5%
H. W. Sheppard (Independent) 0.4%
Thomas H. Gignilliat (Republican) 0.1%

|- ! | Edward E. Cox | | Democratic | 1924 | Incumbent re-elected. | nowrap | {{Plainlist|

Edward E. Cox (Democratic) 96.8%
William Campbell (Independent) 3.2%

|- ! | Stephen Pace | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Stephen Pace (Democratic)
Uncontested

|- ! | Albert Sidney Camp | | Democratic | 1939 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Albert Sidney Camp (Democratic)
Uncontested

|- ! | Robert Ramspeck | | Democratic | 1929 | Incumbent re-elected. | nowrap | {{Plainlist|

Robert Ramspeck (Democratic) 99.9%
Henry A. Alexander (Republican) 0.1%

|- ! | Carl Vinson | | Democratic | 1914 | Incumbent re-elected. | nowrap | {{Plainlist|

Carl Vinson (Democratic) 99.9%
Mrs. J. Ben Warren (Republican) 0.1%

|- ! | Malcolm C. Tarver | | Democratic | 1926 | Incumbent re-elected. | nowrap | {{Plainlist|

Malcolm C. Tarver (Democratic) 86.4%
Lewis H. Crawford (Republican) 13.6%
Norman Thomas (Independent) 0.005%

|- ! | Florence Reville Gibbs | | Democratic | 1940 | | Incumbent retired. Democratic hold. | nowrap | {{Plainlist|

John S. Gibson (Democratic)
Uncontested

|- ! | B. Frank Whelchel | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

B. Frank Whelchel (Democratic) 84.4%
William C. Horton (Republican) 15.4%
W. H. Slack Jr. (Independent) 0.2%

|- ! | Paul Brown | | Democratic | 1933 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Paul Brown (Democratic) 98.7%
D. Talmadge Bowers (Independent) 1.3%
G. P. King (Independent) 0.01%

Idaho

|- ! | Compton I. White | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Compton I. White (Democratic) 62.0%
Edward Gaffney (Republican) 38.0%

|- ! | Henry Dworshak | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Henry Dworshak (Republican) 53.1%
Ira H. Masters (Democratic) 46.9%

Illinois

|- ! | Arthur Wergs Mitchell | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Arthur Wergs Mitchell (Democratic) 52.7%
William E. King (Republican) 46.7%

|- ! | Raymond S. McKeough | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Raymond S. McKeough (Democratic) 51.4%
P. H. Moynihan (Republican) 48.6%

|- ! | Edward A. Kelly | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Edward A. Kelly (Democratic) 51.1%
Waldemar J. Roehler (Republican) 48.9%

|- ! | Harry P. Beam | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Harry P. Beam (Democratic) 77.4%
Henry F. Schmudde (Republican) 22.6%

|- ! | Adolph J. Sabath | | Democratic | 1906 | Incumbent re-elected. | nowrap | {{Plainlist|

Adolph J. Sabath (Democratic) 71.0%
Martin Dykema (Republican) 29.0%

|- ! | A. F. Maciejewski | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

A. F. Maciejewski (Democratic) 56.2%
Joseph Wagner (Republican) 43.8%

|- ! | Leonard W. Schuetz | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Leonard W. Schuetz (Democratic) 50.9%
James G. Moreland (Republican) 49.1%

|- ! | Leo Kocialkowski | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Leo Kocialkowski (Democratic) 78.1%
Anthony V. Champagne (Republican) 21.9%

|- ! | James McAndrews | | Democratic | 1934 | | Incumbent lost re-election. Republican gain. | nowrap | {{Plainlist|

Charles S. Dewey (Republican) 53.3%
James McAndrews (Democratic) 46.7%

|- ! | Ralph E. Church | | Republican | 1934 | | Incumbent retired to run for U.S. senator. Republican hold. | nowrap | {{Plainlist|

George A. Paddock (Republican) 61.3%
John Haderlein (Democratic) 38.7%

|- ! | Chauncey W. Reed | | Republican | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Chauncey W. Reed (Republican) 64.6%
Edgar O. Eakin (Democratic) 35.4%

|- ! | Noah M. Mason | | Republican | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Noah M. Mason (Republican) 60.6%
August C. Engh (Democratic) 39.4%

|- ! | Leo E. Allen | | Republican | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Leo E. Allen (Republican) 67.6%
John B. Hayes (Democratic) 32.4%

|- ! | Anton J. Johnson | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Anton J. Johnson (Republican) 52.3%
Forest Dizotell (Democratic) 47.7%

|- ! | Robert B. Chiperfield | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Robert B. Chiperfield (Republican) 56.4%
Russell M. Gunn (Democratic) 43.6%

|- ! | Everett Dirksen | | Republican | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Everett Dirksen (Republican) 58.1%
M. R. Clark (Democratic) 41.9%

|- ! | Leslie C. Arends | | Republican | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Leslie C. Arends (Republican) 61.1%
J. Joseph Pitts (Democratic) 38.9%

|- ! | Jessie Sumner | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Jessie Sumner (Republican) 53.2%
James A. Meeks (Democratic) 46.8%

|- ! | William H. Wheat | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

William H. Wheat (Republican) 50.6%
Alfred D. Huston (Democratic) 49.4%

|- ! | James M. Barnes | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

James M. Barnes (Democratic) 51.7%
Hardin E. Hanks (Republican) 48.3%

|- ! | Frank W. Fries | | Democratic | 1936 | | Incumbent lost re-election. Republican gain. | nowrap | {{Plainlist|

George Evan Howell (Republican) 51.6%
Frank W. Fries (Democratic) 48.4%

|- ! | Edwin M. Schaefer | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Edwin M. Schaefer (Democratic) 53.8%
Calvin D. Johnson (Republican) 46.2%

|- ! | Laurence F. Arnold | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Laurence F. Arnold (Democratic) 51.0%
Ben O. Sumner (Republican) 49.0%

|- ! | Claude V. Parsons | | Democratic | 1930 | | Incumbent lost re-election. Republican gain. | nowrap | {{Plainlist|

James V. Heidinger (Republican) 53.6%
Claude V. Parsons (Democratic) 46.4%

|- ! | Kent E. Keller | | Democratic | 1930 | | Incumbent lost re-election. Republican gain. | nowrap | {{Plainlist|

C. W. Bishop (Republican) 50.5%
Kent E. Keller (Democratic) 49.5%

William Stratton (Republican) 25.7%
Stephen A. Day (Republican) 25.3%
Thomas Vernor Smith (Democratic) 24.7%
Walter J. Orlikoski (Democratic) 24.0%
Harry Fleischman (Independent) 0.09%
Lee S. Gregory (Independent) 0.09%
Willis Ray Wilson (Independent) 0.09%
Lena Duell Vincent (Independent) 0.08%

Indiana

|- ! | William T. Schulte | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

William T. Schulte (Democratic) 60.9%
M. Elliott Belshaw (Republican) 39.1%

|- ! | Charles A. Halleck | | Republican | 1935 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Charles A. Halleck (Republican) 58.1%
James O. Cox (Democratic) 41.9%

|- ! | Robert A. Grant | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Robert A. Grant (Republican) 51.3%
George Sands (Democratic) 48.7%

|- ! | George W. Gillie | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

George W. Gillie (Republican) 58.0%
Frank E. Corbett (Democratic) 42.0%

|- ! | Forest Harness | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Forest Harness (Republican) 54.7%
George W. Wolf (Democratic) 45.3%

|- ! | Noble J. Johnson | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Noble J. Johnson (Republican) 52.3%
Lenhardt E. Bauer (Democratic) 47.7%

|- ! | Gerald W. Landis | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Gerald W. Landis (Republican) 52.2%
Charles H. Bedwell (Democratic) 47.8%

|- ! | John W. Boehne Jr. | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

John W. Boehne Jr. (Democratic) 55.5%
Charles F. Werner (Republican) 44.5%

|- ! | Eugene B. Crowe | | Democratic | 1930 | | Incumbent lost re-election. Republican gain. | nowrap | {{Plainlist|

Earl Wilson (Republican) 50.9%
Eugene B. Crowe (Democratic) 49.1%

|- ! | Raymond S. Springer | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Raymond S. Springer (Republican) 53.0%
Don C. Ward (Democratic) 47.0%

|- ! | William Larrabee | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

William Larrabee (Democratic) 51.7%
Maurice G. Robinson (Republican) 48.3%

|- ! | Louis Ludlow | | Democratic | 1928 | Incumbent re-elected. | nowrap | {{Plainlist|

Louis Ludlow (Democratic) 52.9%
James A. Collins (Republican) 47.1%

Iowa

|- ! | Thomas E. Martin | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Thomas E. Martin (Republican) 60.4%
Zoe S. Nabers (Democratic) 39.6%

|- ! | William S. Jacobsen | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

William S. Jacobsen (Democratic) 52.2%
W. A. McCullough (Republican) 47.8%

|- ! | John W. Gwynne | | Republican | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

John W. Gwynne (Republican) 59.9%
Ernest J. Seeman (Democratic) 40.1%

|- ! | Henry O. Talle | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Henry O. Talle (Republican) 56.4%
Morgan J. McEnaney (Democratic) 43.6%

|- ! | Karl M. LeCompte | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Karl M. LeCompte (Republican) 53.3%
Roy E. Stevens (Democratic) 46.7%

|- ! | Robert K. Goodwin | | Republican | 1940 (special) | | Incumbent retired. Republican hold. | nowrap | {{Plainlist|

Paul Cunningham (Republican) 52.3%
E. Frank Fox (Democratic) 47.6%
D. Robinson (Prohibition) 0.2%

|- ! | Ben F. Jensen | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Ben F. Jensen (Republican) 58.6%
Ernest M. Miller (Democratic) 41.4%

|- ! | Fred C. Gilchrist | | Republican | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Fred C. Gilchrist (Republican) 58.1%
Frank J. Lund (Democratic) 41.9%

|- ! | Vincent F. Harrington | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Vincent F. Harrington (Democratic) 50.8%
Albert F. Swanson (Republican) 49.2%

Kansas

|- ! | William P. Lambertson | | Republican | 1928 | Incumbent re-elected. | nowrap | {{Plainlist|

William P. Lambertson (Republican) 61.0%
Clive R. Lane (Democratic) 39.0%

|- ! | Ulysses Samuel Guyer | | Republican | 1926 | Incumbent re-elected. | nowrap | {{Plainlist|

Ulysses Samuel Guyer (Republican) 54.0%
Harold H. Harding (Democratic) 46.0%

|- ! | Thomas Daniel Winter | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Thomas Daniel Winter (Republican) 55.2%
W. E. Ledbetter (Democratic) 44.8%

|- ! | Edward Herbert Rees | | Republican | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Edward Herbert Rees (Republican) 62.5%
Dudley Doolittle (Democratic) 37.5%

|- ! | John Mills Houston | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

John Mills Houston (Democratic) 52.5%
Stanley Taylor (Republican) 47.5%

|- ! | Frank Carlson | | Republican | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Frank Carlson (Republican) 60.9%
Max Jones (Democratic) 39.1%

|- ! | Clifford R. Hope | | Republican | 1926 | Incumbent re-elected. | nowrap | {{Plainlist|

Clifford R. Hope (Republican) 63.9%
Claude E. Main (Democratic) 36.1%

Kentucky

|- ! | Noble Jones Gregory | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Noble Jones Gregory (Democratic)
Uncontested

|- ! | Beverly M. Vincent | | Democratic | 1937 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Beverly M. Vincent (Democratic)
Uncontested

|- ! | Emmet O'Neal | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Emmet O'Neal (Democratic) 60.0%
Ben J. Brumleve (Republican) 40.0%

|- ! | Edward W. Creal | | Democratic | 1935 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Edward W. Creal (Democratic) 58.5%
Lewis H. Mather (Republican) 41.5%

|- ! | Brent Spence | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Brent Spence (Democratic) 61.2%
Henry J. Cook (Republican) 38.8%

|- ! | Virgil Chapman | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Virgil Chapman (Democratic) 60.5%
William D. Rogers (Republican) 39.5%

|- ! | Andrew J. May | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Andrew J. May (Democratic) 56.8%
James W. Turner (Republican) 43.2%

|- ! | Joe B. Bates | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Joe B. Bates (Democratic) 58.0%
H. Clell Hayes (Republican) 42.0%

|- ! | John M. Robsion | | Republican | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

John M. Robsion (Republican) 61.7%
Bert Rowland (Democratic) 38.3%

Louisiana

Several close allies of former governor Huey Long were defeated in primaries by reform candidates.

|- ! | Joachim O. Fernández | | Democratic | 1930 | | Incumbent lost renomination. Democratic hold. | nowrap | {{Plainlist|

F. Edward Hébert (Democratic)
Uncontested

|- ! | Paul H. Maloney | | Democratic | 1930 | | Incumbent lost renomination. Democratic hold. | nowrap | {{Plainlist|

Hale Boggs (Democratic)
Uncontested

|- ! | Robert L. Mouton | | Democratic | 1936 | | Incumbent lost renomination. Democratic hold. | nowrap | {{Plainlist|

James R. Domengeaux (Democratic) 66.0%
David W. Pipes Jr. (Republican) 34.0%

|- ! | Overton Brooks | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Overton Brooks (Democratic) 99.97%
Benjamin E. Neal (Independent) 0.03%

|- ! | Newt V. Mills | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Newt V. Mills (Democratic)
Uncontested

|- ! | John K. Griffith | | Democratic | 1936 | | Incumbent lost renomination. Democratic hold. | nowrap | {{Plainlist|

Jared Y. Sanders Jr. (Democratic)
Uncontested

|- ! | René L. De Rouen | | Democratic | 1927 | | Incumbent retired. Democratic hold. | nowrap | {{Plainlist|

Vance Plauché (Democratic)
Uncontested

|- ! | A. Leonard Allen | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

A. Leonard Allen (Democratic)
Uncontested

Maine

|- ! | James C. Oliver | | Republican | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

James C. Oliver (Republican) 63.4%
Peter M. MacDonald (Democratic) 36.6%

|- ! | Margaret Chase Smith | | Republican | 1940 | Incumbent re-elected. | nowrap | {{Plainlist|

Margaret Chase Smith (Republican) 64.6%
Edward J. Beauchamp (Democratic) 35.4%

|- ! | Owen Brewster | | Republican | 1934 | | Incumbent retired to run for U.S. senator. Republican hold. | nowrap | {{Plainlist|

Frank Fellows (Republican) 66.1%
Thomas N. Curran (Democratic) 33.9%

Maryland

|- ! | David Jenkins Ward | | Democratic | 1939 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

David Jenkins Ward (Democratic) 53.9%
Robert F. Duer (Republican) 46.1%
Thomas F. Johnson (Independent) 0.006%

|- ! | William P. Cole Jr. | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

William P. Cole Jr. (Democratic) 65.7%
Theodore F. Brown (Republican) 34.3%

|- ! | Thomas D'Alesandro Jr. | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Thomas D'Alesandro Jr. (Democratic) 61.5%
John A. Janetzke Jr. (Republican) 38.5%

|- ! | Ambrose Jerome Kennedy | | Democratic | 1932 | | Incumbent lost renomination. Democratic hold. | nowrap | {{Plainlist|

John Ambrose Meyer (Democratic) 56.6%
Daniel Ellison (Republican) 43.4%

|- ! | Lansdale Sasscer | | Democratic | 1939 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Lansdale Sasscer (Democratic) 71.0%
John N. Torvestad (Republican) 29.0%
George Brown (Independent) 0.001%

|- ! | William D. Byron | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

William D. Byron (Democratic) 53.5%
Walter Johnson (Republican) 46.5%
Charles P. Stewart (Independent) 0.001%

Massachusetts

|- ! | Allen T. Treadway | | Republican | 1912 | Incumbent re-elected. | nowrap | {{Plainlist|

Allen T. Treadway (Republican) 57.1%
Clifford J. Akey (Democratic) 42.9%

|- ! | Charles R. Clason | | Republican | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Charles R. Clason (Republican) 58.4%
Patrick A. Doyle (Democratic) 41.6%

|- ! | Joseph E. Casey | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Joseph E. Casey (Democratic) 54.6%
Edward T. Simoneau (Republican) 45.4%

|- ! | Pehr G. Holmes | | Republican | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Pehr G. Holmes (Republican) 53.2%
Frank J. McGrail (Democratic) 46.0%
Helen P. Nylen (Prohibition) 0.9%

|- ! | Edith Nourse Rogers | | Republican | 1925 | Incumbent re-elected. | nowrap | {{Plainlist|

Edith Nourse Rogers (Republican) 76.2%
Francis J. Roane (Democratic) 23.8%

|- ! | George J. Bates | | Republican | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

George J. Bates (Republican) 71.6%
James D. Burns (Democratic) 28.4%

|- ! | Lawrence J. Connery | | Democratic | 1937 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Lawrence J. Connery (Democratic) 62.1%
William Henry Haskell (Republican) 36.4%
Thaxter Eaton (Prohibition) 1.5%

|- ! | Arthur D. Healey | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Arthur D. Healey (Democratic) 55.4%
John J. Irwin (Republican) 44.6%

|- ! | Robert Luce | | Republican | 1936 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

Thomas H. Eliot (Democratic) 52.1%
Robert Luce (Republican) 47.9%

|- ! | George H. Tinkham | | Republican | 1914 | Incumbent re-elected. | nowrap | {{Plainlist|

George H. Tinkham (Republican) 59.1%
David M. Owens (Democratic) 40.9%

|- ! | Thomas A. Flaherty | | Democratic | 1937 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Thomas A. Flaherty (Democratic) 83.8%
Benjamin J. Green (Republican) 16.2%

|- ! | John W. McCormack | | Democratic | 1928 | Incumbent re-elected. | nowrap | {{Plainlist|

John W. McCormack (Democratic) 78.1%
Henry J. Allen (Republican) 21.9%

|- ! | Richard B. Wigglesworth | | Republican | 1928 | Incumbent re-elected. | nowrap | {{Plainlist|

Richard B. Wigglesworth (Republican) 65.0%
Francis G. O'Neill (Democratic) 34.1%
Freeman Putney Jr. (Prohibition) 0.8%

|- ! | Joseph W. Martin Jr. | | Republican | 1924 | Incumbent re-elected. | nowrap | {{Plainlist|

Joseph W. Martin Jr. (Republican) 54.4%
Harold E. Cole (Democratic) 45.6%

|- ! | Charles L. Gifford | | Republican | 1922 | Incumbent re-elected. | nowrap | {{Plainlist|

Charles L. Gifford (Republican) 57.8%
George F. Backus (Democratic) 42.2%

Michigan

|- ! | Rudolph G. Tenerowicz | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Rudolph G. Tenerowicz (Democratic) 79.9%
Donald J. Marshall (Republican) 19.5%
Thomas X. Dombrowski (Communist) 0.4%
Stanley Wincek (Socialist) 0.3%

|- ! | Earl C. Michener | | Republican | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Earl C. Michener (Republican) 62.3%
Redmond M. Burr (Democratic) 37.7%
Walter S. Haynes (Prohibition) 0.05%

|- ! | Paul W. Shafer | | Republican | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Paul W. Shafer (Republican) 62.1%
Charles T. McSherry (Democratic) 37.6%
Carson McDaniels (Socialist) 0.2%
Oliver O. Pickard (Prohibition) 0.1%

|- ! | Clare Hoffman | | Republican | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Clare Hoffman (Republican) 61.8%
Harvey Hope Jarvis (Democratic) 38.1%
Sarah Bishop (Prohibition) 0.08%

|- ! | Bartel J. Jonkman | | Republican | 1940 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Bartel J. Jonkman (Republican) 53.7%
Garrett Heyns (Democratic) 46.3%

|- ! | William W. Blackney | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

William W. Blackney (Republican) 51.1%
Charles R. Adair (Democratic) 48.6%
Harry F. Griffin (Socialist) 0.2%
Royal S. Woodhead (Prohibition) 0.07%

|- ! | Jesse P. Wolcott | | Republican | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Jesse P. Wolcott (Republican) 65.2%
Albert A. Wagner (Democratic) 34.8%
Edward Voller (Prohibition) 0.06%

|- ! | Fred L. Crawford | | Republican | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Fred L. Crawford (Republican) 61.2%
Louis C. Schwinger (Democratic) 38.8%
Holgar Larson (Prohibition) 0.06%

|- ! | Albert J. Engel | | Republican | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Albert J. Engel (Republican) 56.8%
Noel P. Fox (Democratic) 43.1%
William H. Boileau (Prohibition) 0.07%

|- ! | Roy O. Woodruff | | Republican | 1920 | Incumbent re-elected. | nowrap | {{Plainlist|

Roy O. Woodruff (Republican) 61.9%
William J. Kelly (Democratic) 37.9%
F. A. Halsted (Socialist) 0.10%
Gustav W. Malm (Prohibition) 0.06%

|- ! | Frederick Van Ness Bradley | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Frederick Van Ness Bradley (Republican) 51.1%
Wendell L. Lund (Democratic) 48.7%
Raymond Anderson (Communist) 0.09%
S. Basil Dickinson (Prohibition) 0.05%

|- ! | Frank Eugene Hook | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Frank Eugene Hook (Democratic) 51.3%
John B. Bennett (Republican) 48.4%
Arvid N. Phillips (Communist) 0.4%

|- ! | Clarence J. McLeod | | Republican | 1938 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

George D. O'Brien (Democratic) 54.6%
Clarence J. McLeod (Republican) 44.9%
William Jenkins (Socialist) 0.3%
Huge Beiswenger (Communist) 0.2%

|- ! | Louis C. Rabaut | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Louis C. Rabaut (Democratic) 59.0%
George B. Schaeffer (Republican) 41.0%

|- ! | John Dingell Sr. | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

John Dingell Sr. (Democratic) 61.9%
Archie C. Fraser (Republican) 37.9%
Woodrow Ingram (Socialist) 0.3%

|- ! | John Lesinski Sr. | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

John Lesinski Sr. (Democratic) 58.8%
Robert Ford (Republican) 40.8%
Mint Nauta (Socialist) 0.3%
Nat Wald (Communist) 0.2%

|- ! | George Anthony Dondero | | Republican | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

George Anthony Dondero (Republican) 54.7%
Draper Allen (Democratic) 45.1%
Walter Allmendiger (Socialist) 0.2%

Minnesota

|- ! | August H. Andresen | | Republican | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

August H. Andresen (Republican) 64.8%
Francis L. Murphy (Democratic) 20.1%
Endre B. Anderson (Farmer–Labor) 15.1%

|- ! | Elmer Ryan | | Democratic | 1934 | | Incumbent lost re-election. Republican gain. | nowrap | {{Plainlist|

Joseph P. O'Hara (Republican) 49.0%
Elmer Ryan (Democratic) 42.5%
C. E. McNaught (Farmer–Labor) 8.5%

|- ! | John G. Alexander | | Republican | 1938 | | Incumbent lost renomination. Republican hold. | nowrap | {{Plainlist|

Richard P. Gale (Republican) 43.5%
Henry Teigan (Farmer–Labor) 34.2%
Martin A. Hogan (Democratic) 19.3%
John G. Alexander (Independent) 3.1%

|- ! | Melvin Maas | | Republican | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Melvin Maas (Republican) 58.8%
George L. Siegel (Farmer–Labor) 28.2%
Willard J. Moran (Democratic) 12.9%

|- ! | Oscar Youngdahl | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Oscar Youngdahl (Republican) 52.1%
Dewey Johnson (Farmer–Labor) 34.3%
LaMoine Montgomery Dowling (Democratic) 13.6%

|- ! | Harold Knutson | | Republican | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Harold Knutson (Republican) 61.5%
E. Thomas O'Briesn (Democratic) 38.5%

|- ! | Herman Carl Andersen | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Herman Carl Andersen (Republican) 50.7%
Harold L. Peterson (Farmer–Labor) 32.6%
J. L. O'Connor (Democratic) 16.8%

|- ! | William Alvin Pittenger | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

William Alvin Pittenger (Republican) 54.2%
John Bernard (Farmer–Labor) 28.5%
M. W. Raihala (Democratic) 17.3%

|- ! | Rich T. Buckler | | Farmer–Labor | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Rich T. Buckler (Farmer–Labor) 43.4%
Colvin G. Butler (Republican) 42.8%
Frank H. Timm (Democratic) 13.7%

Mississippi

|- ! | John E. Rankin | | Democratic | 1920 | Incumbent re-elected. | nowrap | {{Plainlist|

John E. Rankin (Democratic)
Uncontested

|- ! | Wall Doxey | | Democratic | 1928 | Incumbent re-elected. | nowrap | {{Plainlist|

Wall Doxey (Democratic)
Uncontested

|- ! | William Madison Whittington | | Democratic | 1924 | Incumbent re-elected. | nowrap | {{Plainlist|

William Madison Whittington (Democratic)
Uncontested

|- ! | Aaron L. Ford | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Aaron L. Ford (Democratic)
Uncontested

|- ! | Ross A. Collins | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Ross A. Collins (Democratic)
Uncontested

|- ! | William M. Colmer | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

William M. Colmer (Democratic)
Uncontested

|- ! | Dan R. McGehee | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Dan R. McGehee (Democratic)
Uncontested

Missouri

|- ! | Milton A. Romjue | | Democratic | 1922 | Incumbent re-elected. | nowrap | {{Plainlist|

Milton A. Romjue (Democratic) 50.5%
Henry S. Beardsley (Republican) 49.5%

|- ! | William L. Nelson | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

William L. Nelson (Democratic) 53.8%
Roy O. Miller (Republican) 46.2%
Fred Umstead (Socialist Labor) 0.003%

|- ! | Richard M. Duncan | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Richard M. Duncan (Democratic) 53.3%
Fred Maughmer (Republican) 46.7%

|- ! | C. Jasper Bell | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

C. Jasper Bell (Democratic) 60.0%
John W. Mitchell (Republican) 40.0%
William Henke (Socialist Labor) 0.01%

|- ! | Joe Shannon | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Joe Shannon (Democratic) 54.2%
Forest W. Hanna (Republican) 45.8%
Karl Oberheu (Socialist Labor) 0.02%

|- ! | Reuben T. Wood | | Democratic | 1932 | | Incumbent lost re-election. Republican gain. | nowrap | {{Plainlist|

Philip A. Bennett (Republican) 53.7%
Reuben T. Wood (Democratic) 46.3%

|- ! | Dewey Jackson Short | | Republican | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Dewey Jackson Short (Republican) 59.3%
Vernon Sigars (Democratic) 40.7%

|- ! | Clyde Williams | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Clyde Williams (Democratic) 51.1%
Parke M. Banta (Republican) 48.9%
William Doyen (Socialist Labor) 0.002%

|- ! | Clarence Cannon | | Democratic | 1922 | Incumbent re-elected. | nowrap | {{Plainlist|

Clarence Cannon (Democratic) 55.3%
F. B. Meyer (Republican) 44.7%

|- ! | Orville Zimmerman | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Orville Zimmerman (Democratic) 57.4%
C. E. Davenport (Republican) 42.6%

|- ! | Thomas C. Hennings Jr. | | Democratic | 1934 | | Incumbent resigned. Democratic hold. | nowrap | {{Plainlist|

John B. Sullivan (Democratic) 55.7%
Charles J. Riley (Republican) 44.3%
James Wagoner (Socialist Labor) 0.01%

|- ! | Charles Arthur Anderson | | Democratic | 1936 | | Incumbent lost re-election. Republican gain. | nowrap | {{Plainlist|

Walter C. Ploeser (Republican) 53.9%
Charles Arthur Anderson (Democratic) 46.1%
Peter Tendler (Socialist Labor) 0.03%

|- ! | John J. Cochran | | Democratic | 1926 | Incumbent re-elected. | nowrap | {{Plainlist|

John J. Cochran (Democratic) 64.5%
W. S. Sanford (Republican) 35.4%
Norman Kochendorfer (Socialist Labor) 0.01%

Montana

|- ! | Jacob Thorkelson | | Republican | 1938 | | Incumbent lost renomination. Republican hold. | nowrap | {{Plainlist|

Jeannette Rankin (Republican) 54.5%
Jerry J. O'Connell (Democratic) 45.5%

|- ! | James F. O'Connor | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

James F. O'Connor (Democratic) 62.0%
Melvin N. Hoiness (Republican) 37.1%
Leverne Hamilton (Socialist) 0.9%

Nebraska

|- ! | John Hyde Sweet | | Republican | 1940 | | Incumbent retired. Republican hold. | nowrap | {{Plainlist|

Oren S. Copeland (Republican) 55.6%
Henry Carl Luckey (Democratic) 44.4%

|- ! | Charles F. McLaughlin | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Charles F. McLaughlin (Democratic) 56.6%
Theodore W. Metcalf (Republican) 43.4%

|- ! | Karl Stefan | | Republican | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Karl Stefan (Republican) 79.9%
Victor J. McGonigle (Democratic) 17.0%
Paul Burke (Independent) 3.1%

|- ! | Carl Curtis | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Carl Curtis (Republican) 57.7%
R. O. Canaday (Democratic) 25.2%
Charles Gustav Binderup (Independent) 17.1%

|- ! | Harry B. Coffee | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Harry B. Coffee (Democratic) 58.0%
Bert Howard (Republican) 42.0%

Nevada

|- ! | James G. Scrugham | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

James G. Scrugham (Democratic) 64.5%
Ralph W. Lattin (Republican) 35.5%

New Hampshire

|- ! | Arthur B. Jenks | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Arthur B. Jenks (Republican) 51.1%
Alphonse Roy (Democratic) 48.9%

|- ! | Foster Waterman Stearns | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Foster Waterman Stearns (Republican) 53.0%
Daniel J. Moriarty (Democratic) 47.0%

New Jersey

|- ! | Charles A. Wolverton | | Republican | 1926 | Incumbent re-elected. | nowrap | {{Plainlist|

Charles A. Wolverton (Republican) 55.5%
Harry Roye (Democratic) 44.3%
Andrew S. Hall (Socialist) 0.1%
Esther H. Elfreth (Prohibition) 0.06%
John F. Norman (Communist) 0.04%

|- ! | Walter S. Jeffries | | Republican | 1938 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

Elmer H. Wene (Democratic) 52.1%
Walter S. Jeffries (Republican) 47.8%
Joseph B. Sharp (Prohibition) 0.03%

|- ! | William H. Sutphin | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

William H. Sutphin (Democratic) 51.7%
Joseph C. Irwin (Republican) 48.2%
Horace T. Brown (Prohibition) 0.02%

|- ! | D. Lane Powers | | Republican | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

D. Lane Powers (Republican) 55.9%
Thomas S. Dignan (Democratic) 44.0%
William C. Kauffman (Socialist) 0.05%
Gus Napoleon (Ind. Progressive) 0.03%
Wilbur Jones (Prohibition) 0.02%

|- ! | Charles A. Eaton | | Republican | 1924 | Incumbent re-elected. | nowrap | {{Plainlist|

Charles A. Eaton (Republican) 55.9%
Charles R. M. Tuttle (Democratic) 44.0%
Emily R. G. Klein (Prohibition) 0.03%

|- ! | Donald H. McLean | | Republican | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Donald H. McLean (Republican) 54.9%
James E. Downes (Democratic) 44.1%
Margaret Cameron Lowe (Prohibition) 0.6%
Henry Allen (Communist) 0.2%
Samuel Geneslaw (Socialist) 0.1%

|- ! | J. Parnell Thomas | | Republican | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

J. Parnell Thomas (Republican) 64.6%
Mort L. O'Connell (Democratic) 35.0%
Frank A. Buono (Independent) 0.3%
Robert M. Nitsche (Liberal Ind.) 0.05%
H. E. Garrison (Prohibition) 0.03%

|- ! | George N. Seger | | Republican | 1922 | | Incumbent died August 26, 1940. Republican hold. | nowrap | {{Plainlist|

Gordon Canfield (Republican) 58.6%
Addison P. Rosenkrans (Democratic) 41.1%
William Sommers (Independent) 0.1%
Henry Lun (Socialist Labor) 0.1%
Donald Feenstra (Prohibition) 0.04%
Stephen J. Knechtle (Independent) 0.02%

|- ! | Frank C. Osmers Jr. | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Frank C. Osmers Jr. (Republican) 62.7%
Abram A. Lebson (Democratic) 37.2%
Stella Richardson (Prohibition) 0.04%

|- ! | Fred A. Hartley Jr. | | Republican | 1928 | Incumbent re-elected. | nowrap | {{Plainlist|

Fred A. Hartley Jr. (Republican) 56.8%
William E. Holmwood (Democratic) 41.2%
Alonzo Odam (Socialist) 1.3%
Joseph L. W. Boucher (Independent) 0.2%
Frank Alfone (Independent) 0.2%
Lawrence Mahan (Communist) 0.1%
Mildred Clark Bopp (Socialist Labor) 0.04%
Orrie De Bake (Prohibition) 0.02%

|- ! | Albert L. Vreeland | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Albert L. Vreeland (Republican) 55.8%
Mary C. Duffy (Democratic) 41.8%
Wesley U. Morris (Prohibition) 1.8%
Alfio Caudullo (Independent) 0.3%
Nannie Penn (Communist) 0.2%
John C. Privitera (Independent) 0.1%

|- ! | Robert Kean | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Robert Kean (Republican) 53.7%
Thomas J. Holleran (Democratic) 42.4%
Stephan J. Stein (Pension) 1.8%
Harry Samuel Neiwirth (Fusion) 1.6%
Rose Risk (Communist) 0.3%
John P. Wagner (Prohibition) 0.1%
Rubye Smith (Socialist) 0.10%
Ike Diamond (Roos. New Deal) 0.08%

|- ! | Mary Teresa Norton | | Democratic | 1924 | Incumbent re-elected. | nowrap | {{Plainlist|

Mary Teresa Norton (Democratic) 70.2%
Raymond J. Cuddy (Republican) 29.8%
Oscar W. Nevins (Prohibition) 0.02%

|- ! | Edward J. Hart | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Edward J. Hart (Democratic) 65.3%
Otto Trankler (Republican) 34.6%
John Palangio (Socialist) 0.05%
Jay Anyon (Communist) 0.03%
S. P. Barackman (Prohibition) 0.008%

New Mexico

Main article: 1940 United States House of Representatives election in New Mexico

|- ! | John J. Dempsey | | Democratic | 1934 | | Incumbent retired to run for U.S. senator. Democratic hold. | nowrap | {{Plainlist|

Clinton Anderson (Democratic) 58.8%
Herman R. Crile (Republican) 41.2%

New York

|- ! | Leonard W. Hall | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Leonard W. Hall (Republican) 64.5%
Frederick S. Farah (Democratic) 33.0%
Sidney Edelberg (American Labor) 2.5%

|- ! | William Bernard Barry | | Democratic | 1935 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

William Bernard Barry (Democratic) 52.8%
Thomas J. Styles (Republican) 41.5%
Matthew Napear (American Labor) 5.1%
Paul Crosbie (Communist) 0.6%

|- ! | Joseph L. Pfeifer | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Joseph L. Pfeifer (Democratic) 70.6%
Samuel Rosenthal (Republican) 29.4%

|- ! | Thomas H. Cullen | | Democratic | 1918 | Incumbent re-elected. | nowrap | {{Plainlist|

Thomas H. Cullen (Democratic) 56.2%
Alfred A. LaRossa (Republican) 38.3%
Michael Giaratano (American Labor) 5.5%

|- ! | Marcellus H. Evans | | Democratic | 1934 | | Incumbent lost renomination. Incumbent lost re-election as a Republican. Democratic hold. | nowrap | {{Plainlist|

James J. Heffernan (Democratic) 55.2%
Marcellus H. Evans (Republican) 44.8%

|- ! | Andrew Lawrence Somers | | Democratic | 1924 | Incumbent re-elected. | nowrap | {{Plainlist|

Andrew Lawrence Somers (Democratic) 57.7%
Alfred E. Buck (Republican) 25.9%
Irving B. Altman (American Labor) 14.1%
Thomas F. Dwyer (Communist) 2.3%

|- ! | John J. Delaney | | Democratic | 1931 | Incumbent re-elected. | nowrap | {{Plainlist|

John J. Delaney (Democratic) 72.8%
Julius Reinlieb (Republican) 27.2%

|- ! | Donald L. O'Toole | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Donald L. O'Toole (Democratic) 56.8%
Jacob M. Offenhender (Republican) 27.1%
Benjamin Brenner (American Labor) 13.8%
Robert Minor (Communist) 2.3%

|- ! | Eugene James Keogh | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Eugene James Keogh (Democratic) 57.7%
William J. McGahie (Republican) 42.3%

|- ! | Emanuel Celler | | Democratic | 1922 | Incumbent re-elected. | nowrap | {{Plainlist|

Emanuel Celler (Democratic) 71.4%
Edward H. Wilson (Republican) 26.6%
Bessie Polonsky (Communist) 1.9%

|- ! | James A. O'Leary | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

James A. O'Leary (Democratic) 49.4%
Thomas Garrett (Republican) 45.1%
Wellington Roe (American Labor) 5.5%

|- ! | Samuel Dickstein | | Democratic | 1922 | Incumbent re-elected. | nowrap | {{Plainlist|

Samuel Dickstein (Democratic) 72.1%
Bernard Harkavey (American Labor) 15.4%
Joseph Levine (Republican) 12.5%

|- ! | Christopher D. Sullivan | | Democratic | 1916 | | Incumbent retired. Democratic hold. | nowrap | {{Plainlist|

Louis Capozzoli (Democratic) 62.7%
John Rosenberg (Republican) 28.6%
Geno Bardi (American Labor) 8.7%

|- ! | Morris Michael Edelstein | | Democratic | 1940 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Morris Michael Edelstein (Democratic) 56.9%
Peter J. Bakanatch (Republican) 30.0%
Samuel Burt (American Labor) 13.1%

|- ! | Michael J. Kennedy | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Michael J. Kennedy (Democratic) 59.7%
Arthur A. Wyler (Republican) 29.8%
Joseph Curran (American Labor) 10.5%

|- ! | James H. Fay | | Democratic | 1938 | | Incumbent lost re-election. Republican gain. | nowrap | {{Plainlist|

William T. Pheiffer (Republican) 48.7%
James H. Fay (Democratic) 45.2%
Thomas Darcey (American Labor) 6.1%

|- ! | Bruce Fairchild Barton | | Republican | 1937 (special) | | Incumbent retired to run for U.S. senator. Republican hold. | nowrap | {{Plainlist|

Kenneth F. Simpson (Republican) 51.1%
Samuel Kramer (Democratic) 43.5%
Morris Watson (American Labor) 5.4%

|- ! | Martin J. Kennedy | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Martin J. Kennedy (Democratic) 52.7%
James B. Walker Jr. (Republican) 41.2%
Shaemas O'Sheel (American Labor) 6.1%

|- ! | Sol Bloom | | Democratic | 1923 | Incumbent re-elected. | nowrap | {{Plainlist|

Sol Bloom (Democratic) 62.8%
Daniel J. Riesner (Republican) 29.0%
Benjamin M. Zelman (American Labor) 8.1%

|- ! | Vito Marcantonio | | Labor | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Vito Marcantonio (American Labor) 62.5%
James J. Lanzetta (Democratic) 37.5%

|- ! | Joseph A. Gavagan | | Democratic | 1929 | Incumbent re-elected. | nowrap | {{Plainlist|

Joseph A. Gavagan (Democratic) 63.2%
Charles H. Roberts (Republican) 27.1%
Alfred K. Stern (American Labor) 9.7%

|- ! | Walter A. Lynch | | Democratic | 1940 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Walter A. Lynch (Democratic) 60.1%
F. Shepard Cornell (Republican) 31.9%
Frank Crosswaith (American Labor) 8.0%

|- ! | Charles A. Buckley | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Charles A. Buckley (Democratic) 56.5%
Lowell H. Brown (Republican) 26.1%
Jack Altman (American Labor) 14.9%
Isidore Begun (Communist) 2.4%
Max Shachtman (Workers) 0.1%

|- ! | James M. Fitzpatrick | | Democratic | 1926 | Incumbent re-elected. | nowrap | {{Plainlist|

James M. Fitzpatrick (Democratic) 47.7%
Ralph W. Gwinn (Republican) 40.4%
George Thomas (American Labor) 10.4%
Antonio Lombardo (Communist) 1.6%

|- ! | Ralph A. Gamble | | Republican | 1937 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Ralph A. Gamble (Republican) 64.0%
Homer A. Stebbins (Democratic) 33.1%
George O. Pershing (American Labor) 2.9%

|- ! | Hamilton Fish III | | Republican | 1920 | Incumbent re-elected. | nowrap | {{Plainlist|

Hamilton Fish III (Republican) 51.9%
Hardy Steeholm (Democratic) 45.1%
Con Miller (American Labor) 3.1%

|- ! | Lewis K. Rockefeller | | Republican | 1937 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Lewis K. Rockefeller (Republican) 58.0%
George J. Mutari (Democratic) 42.0%

|- ! | William T. Byrne | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

William T. Byrne (Democratic) 57.8%
William V. A. Waterman (Republican) 38.3%
Jack Davis (American Labor) 4.0%

|- ! | E. Harold Cluett | | Republican | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

E. Harold Cluett (Republican) 63.7%
Salvatore J. Leombruno (Democratic) 33.7%
Coleman B. Cheney (American Labor) 2.6%

|- ! | Frank Crowther | | Republican | 1918 | Incumbent re-elected. | nowrap | {{Plainlist|

Frank Crowther (Republican) 54.8%
Burlin G. McKillip (Democratic) 42.5%
John McMahon (American Labor) 2.7%

|- ! | Clarence E. Kilburn | | Republican | 1940 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Clarence E. Kilburn (Republican) 62.5%
Horatio W. Thomas (Democratic) 37.5%

|- ! | Francis D. Culkin | | Republican | 1928 | Incumbent re-elected. | nowrap | {{Plainlist|

Francis D. Culkin (Republican) 68.8%
Frank W. McCormack (Democratic) 28.8%
Clarence Stuber (American Labor) 2.4%

|- ! | Fred J. Douglas | | Republican | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Fred J. Douglas (Republican) 56.4%
Samuel H. Miller (Democratic) 40.9%
Edward G. Cluney (American Labor) 2.7%

|- ! | Edwin Arthur Hall | | Republican | 1939 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Edwin Arthur Hall (Republican) 68.3%
Donald W. Kramer (Democratic) 29.8%
William Livings (American Labor) 1.9%

|- ! | Clarence E. Hancock | | Republican | 1927 | Incumbent re-elected. | nowrap | {{Plainlist|

Clarence E. Hancock (Republican) 56.8%
Flora D. Johnson (Democratic) 40.6%
Walter Soule (American Labor) 2.6%

|- ! | John Taber | | Republican | 1922 | Incumbent re-elected. | nowrap | {{Plainlist|

John Taber (Republican) 59.6%
John W. Kennelly (Democratic) 37.8%
Walter Walczyck (American Labor) 2.6%

|- ! | W. Sterling Cole | | Republican | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

W. Sterling Cole (Republican) 64.9%
David Moses (Democratic) 32.9%
L. Cyrus Rigby (American Labor) 2.2%

|- ! | Joseph J. O'Brien | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Joseph J. O'Brien (Republican) 51.9%
George B. Kelly (Democratic) 48.1%

|- ! | James W. Wadsworth Jr. | | Republican | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

James W. Wadsworth Jr. (Republican) 60.4%
J. Frederick Colson (Democratic) 39.6%

|- ! | Walter G. Andrews | | Republican | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Walter G. Andrews (Republican) 61.1%
Robert A. Hoffman (Democratic) 38.9%

|- ! | J. Francis Harter | | Republican | 1938 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

Alfred F. Beiter (Democratic) 52.3%
J. Francis Harter (Republican) 47.7%

|- ! | Pius Schwert | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Pius Schwert (Democratic) 58.8%
Edward F. Moss (Republican) 41.0%
Mattie Green (Communist) 0.2%

|- ! | Daniel A. Reed | | Republican | 1918 | Incumbent re-elected. | nowrap | {{Plainlist|

Daniel A. Reed (Republican) 62.2%
Milton A. Bissell (Democratic) 37.8%

Caroline O'Day (Democratic) 26.6%
Matthew J. Merritt (Democratic) 26.4%
Mary H. Donlon (Republican) 23.5%
Messmore Kendall (Republican) 23.4%
Helen G. H. Estelle (Prohibition) 0.05%
Neil Dow Cranmer (Prohibition) 0.04%

North Carolina

|- ! | Lindsay C. Warren | | Democratic | 1924 | | Incumbent resigned to become Comptroller General. Democratic hold. | nowrap | {{Plainlist|

Herbert Covington Bonner (Democratic) 92.8%
John A. Wilkinson (Republican) 7.2%

|- ! | John H. Kerr | | Democratic | 1923 | Incumbent re-elected. | nowrap | {{Plainlist|

John H. Kerr (Democratic)
Uncontested

|- ! | Graham Arthur Barden | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Graham Arthur Barden (Democratic) 75.0%
Julian T. Gaskill (Republican) 25.0%

|- ! | Harold D. Cooley | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Harold D. Cooley (Democratic) 79.4%
Ezra Parker (Republican) 20.6%

|- ! | Alonzo Dillard Folger | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Alonzo Dillard Folger (Democratic) 77.2%
Ottis James Reynolds (Republican) 22.8%

|- ! | Carl T. Durham | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Carl T. Durham (Democratic) 78.5%
Gilliam Grissom (Independent) 21.5%

|- ! | J. Bayard Clark | | Democratic | 1928 | Incumbent re-elected. | nowrap | {{Plainlist|

J. Bayard Clark (Democratic) 85.3%
Fred R. Keith (Republican) 14.7%

|- ! | William O. Burgin | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

William O. Burgin (Democratic) 67.2%
F. D. B. Harding (Republican) 32.8%

|- ! | Robert L. Doughton | | Democratic | 1910 | Incumbent re-elected. | nowrap | {{Plainlist|

Robert L. Doughton (Democratic) 68.3%
Monroe Adams (Republican) 31.7%

|- ! | Alfred L. Bulwinkle | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Alfred L. Bulwinkle (Democratic) 69.8%
Ernest M. Morgan (Republican) 30.2%

|- ! | Zebulon Weaver | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Zebulon Weaver (Democratic) 69.0%
Robert Frank Jarrett (Republican) 31.0%

North Dakota

Usher L. Burdick (Republican-NPL) 34.4%
Charles R. Robertson (Republican) 25.8%
R. J. Downey (Democratic) 14.8%
Adolph Michelson (Democratic) 14.6%
Thomas Hall (Independent) 5.4%
John Omland (Independent) 4.8%

Ohio

|- ! | Charles H. Elston | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Charles H. Elston (Republican) 58.0%
Joseph A. Dixon (Democratic) 42.0%

|- ! | William E. Hess | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

William E. Hess (Republican) 56.3%
James E. O'Connell (Democratic) 43.7%

|- ! | Harry N. Routzohn | | Republican | 1938 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

Greg J. Holbrock (Democratic) 52.6%
Harry N. Routzohn (Republican) 47.4%

|- ! | Robert Franklin Jones | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Robert Franklin Jones (Republican) 57.8%
Clarence C. Miller (Democratic) 42.2%

|- ! | Cliff Clevenger | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Cliff Clevenger (Republican) 60.7%
C. H. Armbruater (Democratic) 39.3%

|- ! | James G. Polk | | Democratic | 1930 | | Incumbent retired. Democratic hold. | nowrap | {{Plainlist|

Jacob E. Davis (Democratic) 52.2%
Chester P. Fitch (Republican) 47.8%

|- ! | Clarence J. Brown | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Clarence J. Brown (Republican) 58.3%
J. Fuller Trump (Democratic) 41.7%

|- ! | Frederick C. Smith | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Frederick C. Smith (Republican) 52.5%
Kenneth M. Petri (Democratic) 47.5%

|- ! | John F. Hunter | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

John F. Hunter (Democratic) 54.7%
Wilbur M. White (Republican) 45.3%

|- ! | Thomas A. Jenkins | | Republican | 1924 | Incumbent re-elected. | nowrap | {{Plainlist|

Thomas A. Jenkins (Republican) 58.9%
John P. Kelso (Democratic) 41.1%

|- ! | Harold K. Claypool | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Harold K. Claypool (Democratic) 53.8%
Ray W. Davis (Republican) 46.2%

|- ! | John M. Vorys | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

John M. Vorys (Republican) 51.3%
Arthur P. Lamneck (Democratic) 48.7%

|- ! | Dudley A. White | | Republican | 1936 | | Incumbent retired to run for U.S. senator. Republican hold. | nowrap | {{Plainlist|

Albert David Baumhart Jr. (Republican) 60.8%
Werner S. Haslinger (Democratic) 39.2%

|- ! | Dow W. Harter | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Dow W. Harter (Democratic) 52.3%
Walter B. Wanamaker (Republican) 46.6%
Cornelius Kohlmyer (Independent) 1.1%

|- ! | Robert T. Secrest | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Robert T. Secrest (Democratic) 58.8%
Clair A. Young (Republican) 41.2%

|- ! | James Seccombe | | Republican | 1938 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

William R. Thom (Democratic) 56.3%
James Seccombe (Republican) 43.7%

|- ! | J. Harry McGregor | | Republican | 1940 | Incumbent re-elected. | nowrap | {{Plainlist|

J. Harry McGregor (Republican) 55.1%
Ralph C. Lutz (Democratic) 44.9%

|- ! | Earl R. Lewis | | Republican | 1938 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

Lawrence E. Imhoff (Democratic) 54.5%
Earl R. Lewis (Republican) 45.5%

|- ! | Michael J. Kirwan | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Michael J. Kirwan (Democratic) 61.9%
Charles H. Anderson (Republican) 38.1%

|- ! | Martin L. Sweeney | | Democratic | 1931 | Incumbent re-elected. | nowrap | {{Plainlist|

Martin L. Sweeney (Democratic) 67.7%
George Pillersdorf (Republican) 32.3%

|- ! | Robert Crosser | | Democratic | 1922 | Incumbent re-elected. | nowrap | {{Plainlist|

Robert Crosser (Democratic) 77.1%
J. E. Chizek (Republican) 22.9%

|- ! | Frances P. Bolton | | Republican | 1940 | Incumbent re-elected. | nowrap | {{Plainlist|

Frances P. Bolton (Republican) 56.7%
Anthony A. Fleger (Democratic) 43.3%

George H. Bender (Republican) 26.3%
Stephen M. Young (Democratic) 25.7%
L. L. Marshall (Republican) 24.0%
Francis W. Durbin (Democratic) 24.0%

Oklahoma

|- ! | Wesley E. Disney | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Wesley E. Disney (Democratic) 62.2%
W. R. Boyd (Republican) 37.4%
Martha A. Morrison (Prohibition) 0.3%
Bill Edwards (Independent) 0.1%

|- ! | John Conover Nichols | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

John Conover Nichols (Democratic) 62.2%
E. O. Clark (Republican) 37.8%

|- ! | Wilburn Cartwright | | Democratic | 1926 | Incumbent re-elected. | nowrap | {{Plainlist|

Wilburn Cartwright (Democratic) 79.0%
Frank D. McSherry (Republican) 21.0%

|- ! | Lyle Boren | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Lyle Boren (Democratic) 71.1%
Clyde T. Patrick (Republican) 28.9%

|- ! | Mike Monroney | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Mike Monroney (Democratic) 72.4%
U. S. Stone (Republican) 27.1%
Lizzie Varvil (Prohibition) 0.4%
John Franing (Independent) 0.1%

|- ! | Jed Johnson | | Democratic | 1926 | Incumbent re-elected. | nowrap | {{Plainlist|

Jed Johnson (Democratic) 70.1%
Walter Hubbell (Republican) 29.9%

|- ! | Sam C. Massingale | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Sam C. Massingale (Democratic) 70.0%
Place Montgomery (Republican) 28.5%
T. H. McLemore (Independent) 1.5%

|- ! | Phil Ferguson | | Democratic | 1934 | | Incumbent lost re-election. Republican gain. | nowrap | {{Plainlist|

Ross Rizley (Republican) 53.8%
Phil Ferguson (Democratic) 45.7%
Ralph E. Butterfield (Prohibition) 0.4%

|- ! | Will Rogers | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Will Rogers (Democratic) 65.7%
John W. Harreld (Republican) 33.6%
E. W. Fickinger (Prohibition) 0.4%
Robert Wood (Independent) 0.2%

Oregon

|- ! | James W. Mott | | Republican | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

James W. Mott (Republican) 68.3%
Charles A. Robertson (Democratic) 30.0%
Upton A. Upton (Socialist Labor) 1.7%

|- ! | Walter M. Pierce | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Walter M. Pierce (Democratic) 56.2%
Rex Ellis (Republican) 42.1%
Pauline Sears (Socialist Labor) 1.7%

|- ! | Homer D. Angell | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Homer D. Angell (Republican) 49.9%
Nan Wood Honeyman (Democratic) 47.9%
H. H. Stallard (Independent) 1.6%
Lester E. Harnden (Socialist Labor) 0.7%

Pennsylvania

|- ! | Leon Sacks | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Leon Sacks (Democratic) 61.6%
Emanuel W. Beloff (Republican) 38.0%
Frank Mozer (Communist) 0.2%
George Silver (Socialist) 0.2%

|- ! | James P. McGranery | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

James P. McGranery (Democratic) 60.9%
Augustus Trask Ashton (Republican) 38.3%
Ella Bloor Omholt (Communist) 0.4%
Hyman Siegel (Socialist) 0.2%
B. A. Jackson (No Wage Tax) 0.1%
L. McCabe Johnson (Prohibition) 0.07%

|- ! | Michael J. Bradley | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Michael J. Bradley (Democratic) 63.1%
Frank J. Kownacki (Republican) 36.5%
Joseph Backer (Socialist) 0.2%
Thomas Nabried (Communist) 0.2%

|- ! | John E. Sheridan | | Democratic | 1939 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

John E. Sheridan (Democratic) 63.0%
Benjamin M. Golder (Republican) 36.0%
Norris G. Wood (Communist) 0.3%
William E. Martin (Socialist) 0.3%
Harry L. Neal (State Rights) 0.2%
John Cunningham (American Way) 0.06%

|- ! | Fred C. Gartner | | Republican | 1938 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

Francis R. Smith (Democratic) 55.8%
Fred C. Gartner (Republican) 43.7%
Bernard Samoff (Socialist) 0.3%
Harry Casey (Communist) 0.1%
Oscar W. Wall (Prohibition) 0.08%

|- ! | Francis J. Myers | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Francis J. Myers (Democratic) 61.1%
Frank Truscott (Republican) 38.0%
Harold B. Hatfield (No Wage Tax) 0.5%
Joseph Dougher (Communist) 0.2%
Edward Gallob (Socialist) 0.1%

|- ! | George P. Darrow | | Republican | 1938 | | Incumbent retired. Republican hold. | nowrap | {{Plainlist|

Hugh Scott (Republican) 50.9%
Gilbert Cassidy (Democratic) 48.8%
William O'Reilly (Socialist) 0.3%

|- ! | James Wolfenden | | Republican | 1928 | Incumbent re-elected. | nowrap | {{Plainlist|

James Wolfenden (Republican) 57.6%
E. Adele Scott Saul (Democratic) 42.2%
Charles Palmer (Prohibition) 0.2%

|- ! | Charles L. Gerlach | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Charles L. Gerlach (Republican) 52.4%
Henry V. Scheirer (Democratic) 47.4%
Byron Mayberry (Prohibition) 0.2%

|- ! | J. Roland Kinzer | | Republican | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

J. Roland Kinzer (Republican) 57.7%
George M. May (Democratic) 42.2%
John Granville Eddy (Communist) 0.08%

|- ! | Patrick J. Boland | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Patrick J. Boland (Democratic) 52.6%
Joseph F. Gunster (Republican) 47.4%

|- ! | J. Harold Flannery | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

J. Harold Flannery (Democratic) 57.8%
J. Henry Pool (Republican) 42.2%

|- ! | Ivor D. Fenton | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Ivor D. Fenton (Republican) 50.5%
James H. Gildea (Democratic) 48.9%
Robert J. Lesser (Independent) 0.6%

|- ! | Guy L. Moser | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Guy L. Moser (Democratic) 56.0%
John C. Evans (Republican) 37.0%
Raymond S. Hofses (Socialist) 5.8%
Harry A. Obold (Independent) 0.8%
William N. Stottlemyer (Prohibition) 0.2%
Ben Rubin (Communist) 0.1%

|- ! | Albert G. Rutherford | | Republican | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Albert G. Rutherford (Republican) 60.4%
F. R. Clark (Democratic) 39.2%
Fred P. Millington (Prohibition) 0.4%

|- ! | Robert F. Rich | | Republican | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Robert F. Rich (Republican) 60.5%
Hugh Gilmore (Democratic) 39.5%

|- ! | J. William Ditter | | Republican | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

J. William Ditter (Republican) 62.2%
Victor Eppstein (Democratic) 37.8%

|- ! | Richard M. Simpson | | Republican | 1937 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Richard M. Simpson (Republican) 57.6%
John M. Keichline (Democratic) 42.4%

|- ! | John C. Kunkel | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

John C. Kunkel (Republican) 54.4%
John A. Smith (Democratic) 45.6%

|- ! | Benjamin Jarrett | | Republican | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Benjamin Jarrett (Republican) 58.2%
John R. Boland Jr. (Democratic) 40.8%
Robert G. Burnham (Prohibition) 1.0%

|- ! | Francis E. Walter | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Francis E. Walter (Democratic) 56.2%
T. Fred Woodley (Republican) 43.7%
Walter M. Trumbull (Communist) 0.1%

|- ! | Chester H. Gross | | Republican | 1938 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

Harry L. Haines (Democratic) 54.8%
Chester H. Gross (Republican) 44.6%
Raymond N. Fehl (Republican) 0.5%

|- ! | James E. Van Zandt | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

James E. Van Zandt (Republican) 56.3%
William M. Aukerman (Democratic) 43.7%

|- ! | J. Buell Snyder | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

J. Buell Snyder (Democratic) 56.6%
J. Clarke Glassburn (Republican) 43.2%
Minnie B. Shaulis (Prohibition) 0.2%

|- ! | Charles I. Faddis | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Charles I. Faddis (Democratic) 61.0%
Lucius McK. Crumrine (Republican) 39.0%

|- ! | Louis E. Graham | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Louis E. Graham (Republican) 50.9%
Peter P. Reising (Democratic) 49.1%

|- ! | Harve Tibbott | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Harve Tibbott (Republican) 51.6%
Joseph Anthony Gray (Democratic) 47.8%
James O. Archer (Prohibition) 0.5%

|- ! | Robert G. Allen | | Democratic | 1936 | | Incumbent retired. Democratic hold. | nowrap | {{Plainlist|

Augustine B. Kelley (Democratic) 55.4%
James M. Underwood (Republican) 42.0%
A. F. Daughenbaugh (Prog. Labor) 2.1%
S. W. Bierer (Prohibition) 0.5%

|- ! | Robert L. Rodgers | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Robert L. Rodgers (Republican) 54.2%
James F. Lavery (Democratic) 45.4%
Ira M. Ramsey (Prohibition) 0.4%

|- ! | Robert J. Corbett | | Republican | 1938 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

Thomas E. Scanlon (Democratic) 50.1%
Robert J. Corbett (Republican) 49.9%

|- ! | John McDowell | | Republican | 1938 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

Samuel A. Weiss (Democratic) 55.7%
John McDowell (Republican) 43.5%
M. J. Dibble (Prohibition) 0.3%
George Bush (Prog. Labor) 0.3%
Ben Findley (Communist) 0.2%

|- ! | Herman P. Eberharter | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Herman P. Eberharter (Democratic) 68.6%
Samuel M. Jackson (Republican) 31.1%
H. Joseph Filner (Communist) 0.2%

|- ! | Joseph A. McArdle | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Joseph A. McArdle (Democratic) 55.0%
James I. Marsh (Republican) 44.9%
Charles A. Brown (Prohibition) 0.1%

|- ! | Matthew A. Dunn | | Democratic | 1932 | | Incumbent retired. Democratic hold. | nowrap | {{Plainlist|

James A. Wright (Democratic) 53.8%
Robert B. McKinley (Republican) 46.2%

Rhode Island

|- ! | Charles Risk | | Republican | 1938 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

Aime Forand (Democratic) 57.5%
Charles Risk (Republican) 42.5%

|- ! | Harry Sandager | | Republican | 1938 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

John E. Fogarty (Democratic) 53.8%
Harry Sandager (Republican) 46.2%

South Carolina

Main article: 1940 United States House of Representatives elections in South Carolina

|- ! | Clara G. McMillan | | Democratic | 1939 (special) | | Incumbent retired. Democratic hold. | nowrap | {{Plainlist|

L. Mendel Rivers (Democratic) 98.4%
Mrs. J. E. Messervy (Republican) 1.6%

|- ! | Hampton P. Fulmer | | Democratic | 1920 | Incumbent re-elected. | nowrap | {{Plainlist|

Hampton P. Fulmer (Democratic) 98.6%
M. B. Cross (Republican) 1.4%

|- ! | Butler B. Hare | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Butler B. Hare (Democratic) 99.3%
A. F. Ernest (Republican) 0.7%

|- ! | Joseph R. Bryson | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Joseph R. Bryson (Democratic) 97.3%
James D. McCullough (Republican) 2.7%

|- ! | James P. Richards | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

James P. Richards (Democratic) 99.2%
C. F. Pendleton (Republican) 0.8%
J. Bates Gerald (Independent) 0.03%

|- ! | John L. McMillan | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

John L. McMillan (Democratic) 99.0%
C. B. Ruffin (Republican) 1.0%

South Dakota

|- ! | Karl Mundt | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Karl Mundt (Republican) 59.6%
Oscar Fosheim (Democratic) 40.4%

|- ! | Francis Case | | Republican | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Francis Case (Republican) 66.1%
Arthur W. Watwood (Democratic) 33.9%

Tennessee

|- ! | B. Carroll Reece | | Republican | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

B. Carroll Reece (Republican) 68.7%
Robert E. Walker (Democratic) 31.3%

|- ! | John Jennings | | Republican | 1939 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

John Jennings (Republican) 56.6%
Clay James (Democratic) 43.4%

|- ! | Estes Kefauver | | Democratic | 1939 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Estes Kefauver (Democratic) 68.7%
Jerome Taylor (Republican) 31.3%

|- ! | Albert Gore Sr. | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Albert Gore Sr. (Democratic) 88.9%
H. E. McLean (Republican) 11.1%

|- ! | Joseph W. Byrns Jr. | | Democratic | 1938 | | Incumbent lost re-election. Independent gain. Winner subsequently joined Democratic caucus. | nowrap | {{Plainlist|

Percy Priest (Independent) 50.2%
Joseph W. Byrns Jr. (Democratic) 42.8%
Julian H. Campbell (Republican) 7.1%

|- ! | W. Wirt Courtney | | Democratic | 1939 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

W. Wirt Courtney (Democratic)
Uncontested

|- ! | Herron C. Pearson | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Herron C. Pearson (Democratic)
Uncontested

|- ! | Jere Cooper | | Democratic | 1928 | Incumbent re-elected. | nowrap | {{Plainlist|

Jere Cooper (Democratic) 92.1%
Julian Palmer (Independent) 7.9%

|- ! | Clifford Davis | | Democratic | 1940 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Clifford Davis (Democratic) 96.0%
Theo Wynn Larwill (Independent) 4.0%

Texas

|- ! | Wright Patman | | Democratic | 1928 | Incumbent re-elected. | nowrap | {{Plainlist|

Wright Patman (Democratic)
Uncontested

|- ! | Martin Dies Jr. | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Martin Dies Jr. (Democratic)
Uncontested

|- ! | Lindley Beckworth | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Lindley Beckworth (Democratic)
Uncontested

|- ! | Sam Rayburn | | Democratic | 1912 | Incumbent re-elected. | nowrap | {{Plainlist|

Sam Rayburn (Democratic)
Uncontested

|- ! | Hatton W. Sumners | | Democratic | 1914 | Incumbent re-elected. | nowrap | {{Plainlist|

Hatton W. Sumners (Democratic) 87.5%
Floyd B. Royer (Republican) 12.5%

|- ! | Luther A. Johnson | | Democratic | 1922 | Incumbent re-elected. | nowrap | {{Plainlist|

Luther A. Johnson (Democratic)
Uncontested

|- ! | Nat Patton | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Nat Patton (Democratic) 98.2%
Dudley Lawson (Republican) 1.8%

|- ! | Albert Thomas | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Albert Thomas (Democratic) 94.8%
M. U. S. Kjorlang (Republican) 5.2%

|- ! | Joseph J. Mansfield | | Democratic | 1916 | Incumbent re-elected. | nowrap | {{Plainlist|

Joseph J. Mansfield (Democratic)
Uncontested

|- ! | Lyndon B. Johnson | | Democratic | 1937 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Lyndon B. Johnson (Democratic)
Uncontested

|- ! | William R. Poage | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

William R. Poage (Democratic)
Uncontested

|- ! | Fritz G. Lanham | | Democratic | 1919 | Incumbent re-elected. | nowrap | {{Plainlist|

Fritz G. Lanham (Democratic)
Uncontested

|- ! | Ed Gossett | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Ed Gossett (Democratic) 96.4%
Louis N. Gould (Republican) 3.6%

|- ! | Richard M. Kleberg | | Democratic | 1931 | Incumbent re-elected. | nowrap | {{Plainlist|

Richard M. Kleberg (Democratic)
Uncontested

|- ! | Milton H. West | | Democratic | 1933 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Milton H. West (Democratic) 92.4%
J. A. Simpson (Republican) 7.6%

|- ! | R. Ewing Thomason | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

R. Ewing Thomason (Democratic)
Uncontested

|- ! | Clyde L. Garrett | | Democratic | 1936 | | Incumbent lost renomination. Democratic hold. | nowrap | {{Plainlist|

Sam M. Russell (Democratic)
Uncontested

|- ! | John Marvin Jones | | Democratic | 1916 | | Incumbent retired to become a U.S. Court of Claims judge. Democratic hold. | nowrap | {{Plainlist|

Eugene Worley (Democratic) 96.5%
John W. Beveridge (Republican) 3.5%

|- ! | George H. Mahon | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

George H. Mahon (Democratic)
Uncontested

|- ! | Paul J. Kilday | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Paul J. Kilday (Democratic) 83.4%
Harry Hotchkin (Republican) 16.5%
Emma Tenayuca (Communist) 0.1%

|- ! | Charles L. South | | Democratic | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Charles L. South (Democratic) 92.8%
Ray Ridenhour (Republican) 7.2%

Utah

|- ! | Abe Murdock | | Democratic | 1932 | | Incumbent retired to run for U.S. senator. Democratic hold. | nowrap | {{Plainlist|

Walter K. Granger (Democratic) 57.1%
LeRoy B. Young (Republican) 42.9%

|- ! | J. W. Robinson | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

J. W. Robinson (Democratic) 63.3%
A. Sherman Christenson (Republican) 36.7%

Vermont

|- ! | Charles Albert Plumley | | Republican | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Charles Albert Plumley (Republican) 63.8%
Michael J. Rock (Democratic) 36.2%

Virginia

Main article: 1940 United States House of Representatives elections in Virginia

|- ! | S. Otis Bland | | Democratic | 1918 | Incumbent re-elected. | nowrap | {{Plainlist|

S. Otis Bland (Democratic)
Uncontested

|- ! | Colgate Darden | | Democratic | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Colgate Darden (Democratic)
Uncontested

|- ! | Dave E. Satterfield Jr. | | Democratic | 1937 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Dave E. Satterfield Jr. (Democratic) 96.9%
Winston Dawson (Independent) 3.1%

|- ! | Patrick H. Drewry | | Democratic | 1920 | Incumbent re-elected. | nowrap | {{Plainlist|

Patrick H. Drewry (Democratic) 96.0%
Cyrus Hotchkiss (Socialist) 4.0%

|- ! | Thomas G. Burch | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Thomas G. Burch (Democratic)
Uncontested

|- ! | Clifton A. Woodrum | | Democratic | 1922 | Incumbent re-elected. | nowrap | {{Plainlist|

Clifton A. Woodrum (Democratic) 68.1%
Fred W. McWane (Republican) 31.4%
Lawrence S. Wilkes (Socialist) 0.4%

|- ! | A. Willis Robertson | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

A. Willis Robertson (Democratic) 65.1%
Jacob A. Garber (Republican) 34.7%
Lester Ruffner (Communist) 0.2%

|- ! | Howard W. Smith | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

Howard W. Smith (Democratic) 79.0%
Henry B. Goodloe (Republican) 21.0%

|- ! | John W. Flannagan Jr. | | Democratic | 1930 | Incumbent re-elected. | nowrap | {{Plainlist|

John W. Flannagan Jr. (Democratic) 57.3%
Fred C. Parks (Republican) 42.7%

Washington

|- ! | Warren Magnuson | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Warren Magnuson (Democratic) 61.6%
Fred J. Wettrick (Republican) 38.4%

|- ! | Monrad Wallgren | | Democratic | 1932 | | Incumbent retired to run for U.S. senator. Democratic hold. | nowrap | {{Plainlist|

Henry M. Jackson (Democratic) 57.4%
Payson Peterson (Republican) 42.6%

|- ! | Martin F. Smith | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Martin F. Smith (Democratic) 55.3%
Russell V. Mack (Republican) 44.5%
Henry P. Huff (Communist) 0.2%

|- ! | Knute Hill | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Knute Hill (Democratic) 51.3%
Frank Miller (Republican) 48.7%

|- ! | Charles H. Leavy | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

Charles H. Leavy (Democratic) 55.5%
Walt Horan (Republican) 44.5%

|- ! | John M. Coffee | | Democratic | 1936 | Incumbent re-elected. | nowrap | {{Plainlist|

John M. Coffee (Democratic) 62.8%
Paul A. Preus (Republican) 37.2%

West Virginia

|- ! | A. C. Schiffler | | Republican | 1938 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

Robert L. Ramsay (Democratic) 53.2%
A. C. Schiffler (Republican) 46.8%

|- ! | Jennings Randolph | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Jennings Randolph (Democratic) 57.5%
H. Sharp Summers (Republican) 42.5%

|- ! | Andrew Edmiston Jr. | | Democratic | 1933 (special) | Incumbent re-elected. | nowrap | {{Plainlist|

Andrew Edmiston Jr. (Democratic) 56.6%
H. Roy Waugh (Republican) 43.4%

|- ! | George William Johnson | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

George William Johnson (Democratic) 52.7%
Harry O. Hiteshew (Republican) 47.3%

|- ! | John Kee | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

John Kee (Democratic) 62.9%
Hartley Sanders (Republican) 37.1%

|- ! | Joe L. Smith | | Democratic | 1928 | Incumbent re-elected. | nowrap | {{Plainlist|

Joe L. Smith (Democratic) 61.7%
R. E. O'Connor (Republican) 38.3%

Wisconsin

|- ! | Stephen Bolles | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Stephen Bolles (Republican) 55.8%
Stanley W. Slagg (Progressive) 22.8%
Jacob M. Weisman (Democratic) 21.4%

|- ! | Charles Hawks Jr. | | Republican | 1938 | | Incumbent lost re-election. Progressive gain. | nowrap | {{Plainlist|

Harry Sauthoff (Progressive) 44.2%
Charles Hawks Jr. (Republican) 42.5%
Thomas R. Brooks (Democratic) 13.3%

|- ! | Harry W. Griswold | | Republican | 1938 | | Incumbent died July 4, 1939. Republican hold. | nowrap | {{Plainlist|

William H. Stevenson (Republican) 46.0%
Gardner R. Withrow (Progressive) 44.0%
George T. Doherty (Democratic) 10.0%

|- ! | John C. Schafer | | Republican | 1938 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

Thad F. Wasielewski (Democratic) 35.6%
Leonard C. Fons (Progressive) 32.8%
John C. Schafer (Republican) 31.5%

|- ! | Lewis D. Thill | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Lewis D. Thill (Republican) 44.4%
James M. Pasch (Progressive) 32.8%
Francis T. Murphy (Democratic) 22.8%

|- ! | Frank B. Keefe | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Frank B. Keefe (Republican) 57.4%
Jacob A. Fessler (Democratic) 25.9%
Walter D. Corrigan Sr. (Progressive) 16.7%

|- ! | Reid F. Murray | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Reid F. Murray (Republican) 51.6%
Gerald J. Boileau (Progressive) 35.7%
Wallace A. Bloedorn (Democratic) 12.7%

|- ! | Joshua L. Johns | | Republican | 1938 | Incumbent re-elected. | nowrap | {{Plainlist|

Joshua L. Johns (Republican) 55.8%
Michael F. Kresky (Progressive) 44.2%

|- ! | Merlin Hull | | Progressive | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Merlin Hull (Progressive) 52.8%
John R. Nygaard (Republican) 41.4%
James E. Hughes (Democratic) 5.9%

|- ! | Bernard J. Gehrmann | | Progressive | 1934 | Incumbent re-elected. | nowrap | {{Plainlist|

Bernard J. Gehrmann (Progressive) 48.0%
Peter Van Nostrand (Republican) 35.7%
John G. Green (Democratic) 16.3%

Wyoming

|- ! | Frank O. Horton | | Republican | 1938 | | Incumbent lost re-election. Democratic gain. | nowrap | {{Plainlist|

John J. McIntyre (Democratic) 53.4%
Frank O. Horton (Republican) 46.5%
Lee R. White (Progressive) 0.1%

Non-voting delegates

After two cycles of electing its delegate in September, Alaska Territory returned to a November election.

|- ! | Anthony Dimond | | Democratic | 1932 | Incumbent re-elected. | nowrap | {{Plainlist|

Anthony Dimond (Democratic) 77.2%
Cash Cole (Republican) 22.8%

Notes

References

[https://web.archive.org/web/20101014092712/http://www.time.com/time/magazine/article/0,9171,849318,00.html CONGRESS: New Houses]
(1998). "United States Congressional elections, 1788-1997: the official results of the elections of the 1st through 105th Congresses". McFarland.
"Our Campaigns - MI District 05 - Special Election Race - Feb 19, 1940".
"OH - District 17 - History". Our Campaigns.
"OH District 22 - Special Election". Our Campaigns.
(August 16, 2010). "IA District 6 - Special Election". Our Campaigns.
"NE - District 01 - History". Our Campaigns.
"ME - District 02 - History". Our Campaigns.
"GA - District 08 - History". Our Campaigns.
"AL - District 07 - History". Our Campaigns.
"CO - District 03 - History". Our Campaigns.
"Our Campaigns - AK Delegate Race - Nov 05, 1940".

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1940-united-states-house-of-representatives-elections presidency-of-franklin-d.-roosevelt campaigns-of-lyndon-b.-johnson new-deal emanuel-celler warren-magnuson joseph-w.-martin-jr. sam-rayburn carl-vinson

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