1956 New Hampshire Democratic presidential primary

The 1956 New Hampshire Democratic presidential primary was held on March 13, 1956, in New Hampshire as one of the Democratic Party's statewide nomination contests ahead of the 1956 United States presidential election.

Estes Kefauver, a senator from Tennessee and the previous winner of the 1952 New Hampshire primary against incumbent President Truman, defeated eventual 1956 Democratic nominee Adlai Stevenson by nearly 70 percentage points. 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