The U.S. state of Colorado has had a system of direct voting since gaining statehood in 1876. Citizens and the Colorado General Assembly both have the ability to place new legislation, those recently passed by the General Assembly, and constitutional amendments on the ballot for a popular vote. Colorado has three types of ballot measures that can be voted on in a statewide election: initiatives, referendums, and legislatively referred measures. For a measure to be placed on the ballot, supporters must gather signatures from registered voters. From 1877 to 1910, the only ballot measures allowed were legislatively referred measures. In 1910, Referendum 3 was placed on the ballot by the General Assembly and passed, creating a citizen-led process for initiatives and referendums. The first successful citizen-initiated measures were passed in 1912.
Since that time, ballot measures have played a major role in Colorado politics. After Denver was awarded the hosting rights to the 1976 Winter Olympics , citizens moved to block funding the games with a referendum in 1972 . A 1990 ballot measure instituting term limits for many elected officials helped galvanize a nationwide movement for term limits, and in 2000 Amendment 20 legalized the medical use of marijuana. That measure was followed by full legalization in 2012 with Amendment 64 , and the legalization of psilocybin mushrooms in 2022 with Proposition 122.
Background
A Colorado woman campaigns for [[women's suffrage]] The 1876 Constitution of Colorado included procedures for the General Assembly to place measures on the ballot in a statewide election. In the 1890s, a grassroots movement to increase citizen power began, culminating in a special session of the legislature to discuss initiative and referendums in 1910. That session resulted in 1910's Referendum 3, which passed with over 76% of the vote and created a citizen-initiated process.
Propositions are statutory and amend the Colorado Revised Statutes, whereas amendments change the state constitution. From 1877 to 2016, constitutional amendments, like propositions, required only a simple majority to pass. Following the passage of Amendment 71 in 2016, amendments require 55% of the vote to pass, unless the amendment is to remove language from the constitution. Referred propositions and amendments are lettered, whereas citizen initiatives are numbered.
In 2020, as part of his administration's response to the COVID-19 pandemic, Governor Jared Polis issued an emergency rule allowing petition signature gatherers to do so via email and mail, rather than in-person efforts. The change, while upheld by the Denver District Court, was overturned by the Colorado Supreme Court later that year.
After the 1876 Constitution was adopted, a legislatively referred constitutional amendment that would have granted women the right to vote was placed on the ballot for the 1877 election. The measure failed, with over two-thirds of voters against it. Henry Blackwell, a founder of the American Woman Suffrage Association, summed up the unsuccessful campaign by saying "Woman Suffrage can never be carried by a popular vote without a political party behind it". Blackwell was proven correct in 1893 when, in part due to gains made by the Colorado People's Party in the General Assembly, voters supported a women's suffrage ballot measure by a 55%–45% margin.
In 1970, the International Olympic Committee granted Denver hosting rights for the 1976 Winter Olympics . Governor John Love claimed that the games would cost taxpayers only $5,000,000. Activists quickly noted a wide variety of issues with the state's cost estimate, however, including a lack of transportation infrastructure, no planning for the Olympic Village, and issues with planned events sites. A petition for 1972's Measure 8 quickly reached the necessary 51,000 signatures and 60% of Coloradans voted to prohibit the state from funding the Olympics. Later estimates found that the cost for Denver to host the games would have been $92,000,000, over 18 times the state's estimate. Richard Lamm, who was a leader in the local anti-Olympics movement, would later parlay his fame from the measure into three terms as Governor.
Commercial marijuana operations, such as the one pictured, were legalized as a result of 2012's Amendment 64. The 1984 ballot included Amendment 3, which barred the use of state funds for abortion services. The measure passed by less than one percentage point and gave Colorado the distinction of being both the first state to decriminalize abortion, having done so in 1967, and the first state to prohibit the government from funding it. 1990's Amendment 5 has been credited by the Initiative & Referendum Institute as having started the term limits movement in the United States and was followed by similar initiatives in 1994 and 1996. Colorado's efforts were unique because they placed term limits on members of Congress in addition to state-level officials. The term-limits movement resulted in the Supreme Court case U.S. Term Limits, Inc. v. Thornton (1995), which determined that states could not place restrictions on congresspeople beyond the constitutional requirements.
In 2000, Amendment 20 passed with 54% of the vote and legalized the medical use of marijuana in the state. It was followed by 2012's Amendment 64 , which passed by similar margins and legalized the recreational use of marijuana. The Economist described the vote as "an electoral first not only for America but for the world." Colorado continued this trend of loosening drug policy in 2022 when voters passed Proposition 122 and legalized the use of psilocybin mushrooms in designated "healing centers".
Types of ballot measures
Citizen-initiated
The Constitution of Colorado grants citizens some initiative and referendum powers in Article V. In order for a measure to be placed on the ballot, a petition must receive signatures equal to 5% of the votes cast in the previous election. The governor's veto power does not extend to citizen-initiated measures, which go into effect within one month of election returns being certified.
Initiatives create new state statutes or constitutional amendments. They may be placed on the ballot if their petition is filed at least three months before the upcoming election.
Referendums repeal legislation passed in the previous General Assembly session. They may be placed on the ballot if their petition is filed at least 90 days after the previous General Assembly session adjourns.
Government-initiated
At the General Assembly's discretion, the legislature may place additional measures on the ballot. Article XIX of the Constitution requires that constitutional amendments passed by the legislature be voted on in the next general election. The General Assembly can also vote to place statute changes and proposed spending on the general election ballot.
1800s
1877
Measure name Description Status Yes votes No votes Referendum 1 A constitutional amendment granting women the right to vote 6,612 (32.00%) 14,053 (68.00%)
1880
Measure name Description Status Yes votes No votes Amendment 1 A constitutional amendment requiring uniform taxation 19,198 (84.80%) 3,436 (15.20%)
1881
Measure name Description Status Yes votes No votes State Capital Referendum A referendum on whether the permanent location of the state capital should be Denver or some other location 30,248 (66.48%) 15,249 (33.52%)
1882
Measure name Description Status Yes votes No votes Amendment 2 A constitutional amendment establishing salaries for some state officials 32,858 (79.00%) 8,738 (21.00%)
1884
Measure name Description Status Yes votes No votes Amendment 3(a) Amendment 3(b) Amendment 3(c) A constitutional amendment modifying some General Assembly procedures 47,020 (88.00%) 6,413 (12.00%) A constitutional amendment modifying some General Assembly procedures 45,080 (87.90%) 6,188 (12.10%) A constitutional amendment modifying some General Assembly procedures 45,394 (88.00%) 6,180 (12.00%)
1886
Measure name Description Status Yes votes No votes Amendment 4 Amendment 5 Amendment 6 Amendment 7 Amendment 8 Amendment 9 Amendment 10 A constitutional amendment vesting judicial power in the state court system 17,068 (63.90%) 9,629 (36.10%) A constitutional amendment relating to "original jurisdiction" 16,897 (64.10%) 9,453 (35.90%) A constitutional amendment providing for additional judges on the Colorado Supreme Court 6,478 (30.00%) 15,132 (70.00%) A constitutional amendment allowing the General Assembly to establish criminal courts 7,549 (29.00%) 18,512 (71.00%) A constitutional amendment allowing the General Assembly to create police magistrates 7,148 (27.80%) 18,553 (72.20%) A constitutional amendment relating to judges on Colorado district courts 14,938 (57.90%) 10,867 (42.10%) A constitutional amendment allowing the General Assembly to modify the state court system 14,568 (51.00%) 14,022 (49.00%)
1887
Measure name Description Status Yes votes No votes Measure 1 A constitutional amendment relating to the public debt -- --
1888
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 Measure 4 A constitutional amendment limiting the reasons to contract public debt 15,212 (53.20%) 13,385 (46.80%) A constitutional amendment raising property taxes 749 (7.90%) 8,778 (92.10%) A constitutional amendment limiting the reasons to contract public debt 13,921 (51.30%) 13,209 (48.70%) A constitutional amendment limiting the reasons to contract public debt -- --
1890
Measure name Description Status Yes votes No votes Measure 1 Measure 2 A constitutional amendment modifying the size and salaries of the Colorado Supreme Court 15,283 (42.10%) 20,991 (57.90%) A constitutional amendment relating to "compensation and services" 15,395 (43.40%) 20,078 (56.60%)
1892
Measure name Description Status Yes votes No votes Measure 1 Measure 3 A constitutional amendment relating to uniform taxation 13,713 (52.70%) 12,294 (47.30%) A constitutional amendment relating to the maximum tax rate 12,440 (51.50%) 11,731 (48.50%)
1893
Measure name Description Status Yes votes No votes Measure 2 A constitutional amendment granting women the right to vote 35,798 (54.90%) 29,451 (45.10%)
1894
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 A constitutional amendment relating to locality's "pledging of credit" 26,434 (33.80%) 51,711 (66.20%) A constitutional amendment relating to limits on state debt 22,393 (29.50%) 53,634 (70.50%) A constitutional amendment relating to city debt 21,293 (29.70%) 50,513 (70.30%)
1896
Measure name Description Status Yes votes No votes Measure 1 A constitutional amendment relating to limits on state debt 25,340 (38.90%) 39,790 (61.10%)
1900{{en dash}}1949
1900
Measure name Description Status Yes votes No votes Measure 1 A constitutional amendment relating to the process to amend the constitution 31,471 (73.10%) 11,568 (26.90)
1902
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 Measure 4 Measure 5 Measure 6 Measure 7 Measure 8 Measure 9 Measure 10 A constitutional amendment relating to the election process for county commissioners 49,646 (65.10%) 26,559 (34.90%) A constitutional amendment relating to the city and county of Denver 59,750 (69.90%) 25,767 (30.1%) A constitutional amendment relating to the eight-hour work day 72,980 (73.50%) 26,266 (26.50%) A constitutional amendment relating to voter qualifications 44,769 (62.30%) 27,077 (37.70%) A constitutional amendment relating to the election process for district attorneys 45,191 (64.20%) 25,243 (35.80%) A constitutional amendment relating to property tax exemptions 32,710 (31.10%) 72,370 (68.90%) A constitutional amendment relating to tax limits 31,527 (31.10%) 69,741 (68.90%) A constitutional amendment relating to the election process for justices of the peace 48,682 (65.10%) 26,082 (34.90%) A constitutional amendment relating to the election process for county officials 48,944 (65.20%) 26,140 (34.80%) A constitutional amendment relating to the election process for county judges 44,856 (63.90%) 25,326 (36.10%)
1904
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 Measure 4 Measure 5 A constitutional amendment relating to exemptions to uniform taxation 42,696 (80.30%) 10,444 (19.70%) A constitutional amendment relating to the Colorado Supreme Court 5,863 (56.40%) 4,528 (43.60%) A constitutional amendment relating to the Colorado Supreme Court 5,006 (54.50%) 4,174 (45.50%) A constitutional amendment relating to the Colorado Supreme Court 5,389 (55.70%) 4,293 (44.30%) A constitutional amendment relating to the Colorado Supreme Court 5,264 (55.50%) 4,218 (44.50%)
1906
Measure name Description Status Yes votes No votes Measure 1 A constitutional amendment relating to the election process and voting machines 27,460 (72.40%) 10,467 (27.60%)
1908
Measure name Description Status Yes votes No votes Referendum 1 Referendum 2 Referendum 3 A constitutional amendment allowing the state to issue bonds for the purpose of paying outstanding warrants 26,254 (48.98%) 27,352 (51.02%) A constitutional amendment modifying the salaries of state officials and judges 16,088 (29.88%) 37,753 (70.12%) A constitutional amendment modifying the salaries of county officials 18,558 (39.00%) 29,022 (61.00%)
1910
Measure name Description Status Yes votes No votes Referendum 1 Referendum 2 Referendum 3 Referendum 4 Referendum 5 A constitutional amendment allowing the state to issue bonds for the purpose of paying outstanding warrants 40,054 (50.39%) 39,441 (49.61%) A constitutional amendment modifying the Colorado Board of Land Commissioners 42,128 (66.42%) 21,300 (33.58%) A constitutional amendment creating an initiative and referendum process in the state 89,141 (76.95%) 26,698 (23.05%) A constitutional amendment modifying the salaries of state legislators 39,245 (55.83%) 31,047 (44.17%) A constitutional amendment relating to higher education institutions 59,295 (79.70%) 15,105 (20.30%)
1912
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 Measure 4 Measure 5 Measure 6 Measure 7 Measure 8 Measure 9 Measure 10 Measure 11 Measure 12 Measure 13 Measure 14 Measure 15 Measure 16 Measure 17 Measure 18 Measure 19 Measure 20 Measure 21 Measure 22 Measure 23 Measure 24 Measure 25 Measure 26 Measure 27 Measure 28 Measure 29 Measure 30 Measure 31 Measure 32 A constitutional amendment prohibiting alcoholic beverages statewide 75,877 (39.39%) 116,774 (60.61%) An initiative allowing search and seizure to enforce prohibition laws 64,616 (44.93%) 79,190 (55.07%) An initiative creating an eight-hour workday for female employees 108,959 (77.29%) 32,019 (22.71%) An initiative establishing regulations for public service corporations 30,347 (32.12%) 64,138 (67.88%) An initiative establishing a Colorado State Fair 49,102 (48.35%) 52,462 (51.65%) A constitutional amendment allocating funds for the Colorado Immigration Bureau 30,359 (35.87%) 54,272 (64.13%) An initiative introducing cost-saving measures for publicizing future ballot measures 39,551 (43.85%) 50,635 (56.15%) A constitutional amendment allowing home rule for counties 49,596 (52.55%) 44,778 (47.45%) A constitutional amendment establishing a recall process for elected officials 53,620 (57.54%) 39,564 (42.46%) An initiative modifying election laws 37,616 (49.40%) 38,537 (50.60%) An initiative establishing a special election system for ballot measures 33,413 (45.12%) 40,634 (54.88%) A constitutional amendment establishing a definition for "contempt of court" and allowing for jury trials for such charges 31,850 (43.21%) 41,855 (56.79%) A constitutional amendment establishing a public utilities court with exclusive power over rates 27,534 (34.70%) 51,820 (65.30%) An initiative providing for a "headless ballot" to be used in elections 43,390 (52.34%) 39,504 (47.66%) A constitutional amendment extending wider control of schools to the public 38,318 (40.76%) 55,691 (59.24%) A constitutional amendment establishing juvenile courts in localities with populations greater than 100,000 people 55,416 (57.54%) 40,891 (42.46%) An initiative to allocate some public aid to supporting the children of single mothers 82,337 (68.50%) 37,870 (31.50%) An initiative modifying the laws relating to civil service 38,426 (52.13%) 35,282 (47.87%) An initiative establishing an eight-hour workday for people working in underground mines, smelters, mills, and coke ovens 52,525 (51.85%) 48,777 (48.15%) An initiative allocating control of some funds to the Colorado Highway Commission 44,568 (49.70%) 45,101 (50.30%) A referendum to uphold a law requiring teacher examinations 25,369 (31.93%) 54,086 (68.07%) A referendum upholding a law modifying water rights relating to irrigation 22,931 (32.51%) 47,614 (67.49%) A referendum upholding a law which altered the rules surrounding the branding of livestock 37,387 (49.77%) 337,740 (50.23%) A constitutional amendment replacing the Colorado Board of Equalization with the Colorado Tax Commission 32,548 (44.86%) 40,012 (55.14%) A referendum upholding a law which established an eight-hour workday for people working in underground mines, smelters, and coke ovens 69,489 (69.16%) 30,992 (30.84%) A referendum upholding a law requiring teachers to attend summer trainings 23,521 (27.10%) 63,266 (72.90%) A constitutional amendment allowing county officials to be paid from outside sources 28,889 (40.97%) 41,622 (59.03%) A constitutional amendment raising the limitation on county debts 29,741 (38.61%) 47,284 (61.39%) A referendum upholding a law which changed some rules related to the management of public funds 20,968 (32.12%) 44,322 (67.88%) A constitutional amendment defining mining and smelting as public interests 35,997 (48.68%) 37,953 (51.32%) A constitutional amendment allowing the state to issue bonds for the purpose of funding state highways 36,636 (40.72%) 53,327 (59.28%) An initiative authorizing the construction of a tunnel through James Peak 45,800 (32.95%) 93,183 (67.05%)
1914
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 Measure 4 Measure 5 Measure 6 Measure 7 Measure 8 Measure 9 Measure 10 Measure 11 Measure 12 Measure 13 Measure 14 Measure 15 Measure 16 A constitutional amendment requiring that rejected measures not be placed on the ballot again until six years have passed 55,667 (33.09%) 112,537 (66.91%) A constitutional amendment prohibiting alcohol 129,589 (52.30%) 118,176 (47.70%) A constitutional amendment allowing women to serve as jurors and requiring 3/4 of jurors to agree for a verdict to be reached 67,130 (46.42%) 77,488 (53.58%) A constitutional amendment creating a process by which citizens could petition for a special election solely for ballot measures 40,643 (33.42%) 80,977 (66.58%) An initiative to codify some laws relating to women and children 68,242 (48.62%) 72,122 (51.38%) An initiative providing for probation in criminal cases involving minors and first offenders 62,561 (47.73%) 68,512 (52.27%) An initiative increasing the state roads fund for the purpose of constructing new highways 117,146 (68.51%) 53,844 (31.49%) A constitutional amendment defining newspapers as public utilities 35,752 (28.11%) 91,426 (71.89%) A referendum upholding a law relating to the capitalization of public utilities 37,633 (37.20%) 63,603 (62.80%) A referendum upholding a law relating to the licensing and regulation of commission merchants 39,448 (36.90%) 67,454 (63.10%) A referendum upholding a law relieving employees from assuming risk of injury or death 69,006 (53.37%) 60,298 (46.63%) A referendum upholding a law which altered the peace officer appointment process 49,116 (42.36%) 66,836 (57.64%) A referendum upholding a law relating to a public utilities commission 39,703 (37.85%) 65,182 (62.15%) A constitutional amendment allowing localities sixty years to make up for any indebtedness 38,589 (37.18%) 65,206 (62.82%) A constitutional amendment relating to the equalization of tax assessments 55,987 (50.32%) 55,275 (49.68%) An initiative introducing cost-saving measures for publicizing future ballot measures 48,301 (46.19%) 56,259 (53.81%)
1916
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 Measure 4 Measure 5 Measure 6 Measure 7 Measure 8 A referendum upholding a law relating to medical practice regulation 96,879 (54.06%) 82,317 (45.94%) A constitutional amendment to codify the state civil service 62,458 (39.28%) 96,561 (60.72%) A constitutional amendment exempting beer from existing prohibitions on alcohol 77,345 (32.16%) 163,134 (67.84%) An initiative establishing treatment procedures for people with mental illnesses 164,220 (80.64%) 39,415 (19.36%) An initiative abolishing the Colorado Tax Commission and transferring its duties to the Colorado Board of Equalization 80,362 (48.89%) 84,011 (51.11%) An initiative relating to the regulation of livestock running 85,279 (35.47%) 155,134 (64.53%) An initiative allowing for the investment of public school funds 102,956 (60.92%) 66,058 (39.08%) An measure calling for a constitutional convention 53,530 (43.48%) 69,579 (56.52%)
1918
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 Measure 4 Measure 5 An initiative providing public aid for blind adults 131,469 (93.30%) 9,440 (6.70%) A constitutional amendment codifying the state civil service 75,301 (64.59%) 41,287 (35.41%) An initiative strengthening existing alcohol prohibition 113,636 (63.71%) 64,740 (36.29%) A constitutional amendment limiting the time for state legislators to introduce bills from 25 days to 15 days 67,693 (77.28%) 19,901 (22.72%) A constitutional amendment relating to the publication of ballot measures before the election 98,715 (88.97%) 12,237 (11.03%)
1920
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 Measure 4 Measure 5 Measure 6 Measure 7 Measure 8 Measure 9 Measure 10 An initiative establishing fixed hours for city fire department employees 113,140 (57.80%) 82,596 (42.20%) An initiative requiring the licensing and regulation of chiropractors 84,286 (43.52%) 109,385 (56.48%) An initiative creating a county called Limon County 34,881 (19.81%) 141,239 (80.19%) An initiative creating a county called Flagler County 33,295 (19.17%) 140,363 (80.83%) A constitutional amendment allowing the state to issue bonds for the purpose of building the Moffat, Monarch, and San Juan Tunnels 101,841 (44.68%) 126,099 (55.32%) An initiative allocating $350,000 for the creation of a Psychopathic Hospital and Laboratory () 155,049 (75.51%) 50,295 (24.49%) A constitutional amendment creating a property tax for the purpose of funding state educational facilities 160,268 (75.39%) 52,324 (24.61%) A constitutional amendment authorizing the state to issue a $5,000,000 bond for the purpose of constructing new highways () 100,130 (58.51%) 70,997 (41.49%) A constitutional amendment increasing the number of county judges 35,095 (26.49%) 97,398 (73.51%) A constitutional amendment increasing the salaries of constitutional offices and judges 49,313 (30.40%) 112,878 (69.60%)
1922
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 Measure 4 Measure 5 Measure 6 Measure 7 Measure 8 Measure 9 Measure 10 A constitutional amendment allowing the state to issue $1,500,000 in bonds for the purpose of constructing new highways () 131,271 (66.36%) 66,536 (33.64%) A constitutional amendment creating a public utilities commission 75,061 (41.08%) 107,655 (58.92%) An initiative reapportioning seats in the Colorado General Assembly 61,502 (37.72%) 101,537 (62.28%) A constitutional amendment allowing the legislature to issue some exemptions from the ad valorem tax and create an income tax 42,466 (26.08%) 120,355 (73.92%) An initiative relating to experimental operations on humans and animals 35,476 (16.61%) 178,120 (83.39%) A measure calling for a constitutional convention 53,015 (36.29%) 93,081 (63.71%) A constitutional amendment relating to the location and control of higher education institutions 87,282 (59.95%) 58,315 (40.05%) A constitutional amendment establishing four-year terms for some county officials 37,945 (26.40%) 105,782 (73.60%) A constitutional amendment establishing four-year terms for some state officials 40,081 (28.54%) 100,367 (71.46%) A constitutional amendment allowing the legislature to grant non-citizens the ability to own property 43,074 (31.15%) 95,219 (68.85%)
1924
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 A constitutional amendment establishing a state printer and a printing building committee 32,150 (12.48%) 225,505 (87.52%) A constitutional amendment authorizing the state to issue bonds for the purpose of paying bonuses to military members 91,510 (43.35%) 119,586 (56.65%) A constitutional amendment allowing the legislature to set salaries for state officials 67,230 (34.20%) 129,344 (65.80%)
1926
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 Measure 5 Measure 6 Measure 7 Measure 8 A constitutional amendment allowing the General Assembly to set salaries for state officials and judges 95,625 (47.73%) 104,709 (52.27%) A constitutional amendment allowing the General Assembly to set salaries for county officials 60,086 (33.69%) 118,284 (66.31%) A constitutional amendment allowing the legislature to modify vehicle registration fees 68,459 (33.77%) 134,292 (66.23%) A constitutional amendment allowing the General Assembly to regulate alcohol 107,749 (41.06%) 154,672 (58.94%) An initiative allowing dentists licensed in other states to practice in Colorado 56,433 (23.59%) 182,816 (76.41%) A constitutional amendment creating a public utilities commission 35,137 (17.88%) 161,372 (82.12%) An initiative creating a fuel tax and vehicle registration fees and mandating that all revenues be used exclusively for roads 81,762 (35.98%) 145,482 (64.02%)
1928
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 Measure 4 Measure 5 A constitutional amendment allowing the General Assembly to set salaries for state officials and judges 134,724 (53.09%) 119,060 (46.91%) A constitutional amendment requiring that voters on issues related to school funding be property tax payers 69,005 (30.80%) 155,018 (69.20%) A constitutional amendment modifying eminent domain rules 32,294 (16.97%) 157,973 (83.03%) A constitutional amendment authorizing the state to issue $60,000,000 in bonds for the purpose of constructing new highways () 82,422 (32.16%) 173,881 (67.84%) A constitutional amendment creating an elected Board of Education 84,416 (34.84%) 157,889 (65.16%)
1930
Measure name Description Status Yes votes No votes Measure 1 Measure 2 A measure calling for a constitutional convention 93,879 (48.97%) 97,826 (51.03%) A constitutional amendment creating an elected Board of Education 70,643 (32.05%) 149,770 (67.95%)
1932
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 Measure 4 Measure 5 Measure 6 Measure 7 A constitutional amendment making some county positions hold a four-year term 102,117 (37.57%) 169,703 (62.43%) A referendum upholding a law which increased the oleomargarine tax from 10 cents to 15 cents a pound 134,313 (38.16%) 217,671 (61.84%) An initiative reapportioning seats in the Colorado General Assembly 162,871 (53.07%) 144,037 (46.93%) A constitutional amendment allowing the General Assembly to create a graduated income tax 85,573 (27.49%) 225,713 (72.51%) A constitutional amendment allowing the General Assembly to create a limited income tax 101,438 (32.11%) 214,464 (67.89%) A constitutional amendment limiting fuel taxes 124,610 (33.37%) 248,801 (66.63%) A constitutional amendment repealing the statewide alcohol prohibition 233,311 (56.07%) 182,771 (43.93%)
1934
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 Measure 4 Measure 5 Measure 6 Measure 7 A constitutional amendment centralizing most authority with the Governor of Colorado 102,117 (37.57%) 169,703 (62.43%) A constitutional amendment relating to civil service reform 60,745 (24.02%) 192,140 (75.98%) A constitutional amendment eliminating uniform taxation 107,457 (39.98%) 161,952 (60.11%) A constitutional amendment granting voters authority to approve new taxes 126,649 (45.93%) 149,098 (54.07%) A constitutional amendment requiring that taxes related to gasoline and vehicles be allocated exclusively for roads 160,482 (54.68%) 132,994 (45.32%) A constitutional amendment limiting fuel taxes to 3 cents 87,090 (31.69%) 187,720 (68.31%) An initiative to requiring chain stores to pay license fees 197,144 (55.80%) 156,147 (44.20%)
1936
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 Measure 4 Measure 5 Measure 6 Measure 7 Measure 8 Measure 9 A constitutional amendment establishing an ownership tax on motor vehicles 218,795 (66.90%) 108,270 (33.10%) An initiative providing public assistance to sufferers of tuberculosis below a certain income level 176,872 (56.98%) 133,516 (43.02%) A constitutional amendment limiting tax rates based on the size of a town 60,228 (17.52%) 283,583 (82.48%) A constitutional amendment allowing the General Assembly to establish an income tax 67,155 (20.40%) 262,022 (79.60%) A constitutional amendment providing a pension of $45 a month to the elderly () 239,289 (64.04%) 134,377 (35.96%) An initiative modifying the laws relating to worker's compensation 203,195 (63.91%) 114,733 (36.09%) A constitutional amendment allowing women to serve on juries 129,872 (41.35%) 184,204 (58.65%) A constitutional amendment allowing the general assembly to establish a graduated income tax 167,268 (51.24%) 159,143 (48.76%) A constitutional amendment exempting churches, schools, and cemeteries from property tax 227,254 (67.16%) 111,123 (32.84%)
1938
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 A constitutional amendment giving healthcare practitioners the authority to self-regulate 94,846 (23.13%) 315,174 (76.87%) A constitutional amendment repealing the $45 a month pension and granting the legislature authority to set pensions 157,975 (36.52%) 274,598 (63.48%) An initiative repealing the license fees for chain stores 167,109 (38.70%) 264,700 (61.30%)
1940
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 Measure 4 Measure 5 A constitutional amendment establishing property tax on all intangible property 50,806 (10.35%) 440,202 (89.65%) An initiative to establish a racing commission to oversee horse and dog racing 203,195 (42.28%) 277,392 (57.72%) A constitutional amendment establishing a game and fish commission 196,907 (41.92%) 272,768 (58.08%) A constitutional amendment modifying the General Assembly's ability relating to income taxes 81,787 (18.26%) 366,049 (81.74%) A constitutional amendment lowering the elderly's pension to $30 a month () 138,383 (27.85%) 358,582 (72.15%)
1942
Measure name Description Status Yes votes No votes Measure 1 A constitutional amendment limiting the session length of General Assembly meetings 72,147 (49.49%) 73,648 (50.51%)
1944
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 Measure 4 A constitutional amendment allowing women to serve on juries 195,793 (60.65%) 127,057 (39.35%) A constitutional amendment allowing some foreigners the ability to purchase property 173,652 (47.01%) 195,752 (52.99%) An initiative appropriating $1,500,000 in funding for old age pensions () 195,793 (60.65%) 127,057 (39.35%) A constitutional amendment granting veterans and their widows preference in the civil service 256,563 (70.55%) 107,100 (29.45%)
1946
Measure name Description Status Yes votes No votes Measure 1 Measure 2 A constitutional amendment allowing for secret ballots 118,470 (56.23%) 92,203 (43.77%) A constitutional amendment requiring that any balance in the state pension fund roll-over each year 96,787 (36.38%) 169,243 (63.62%)
1948
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 Measure 4 A constitutional amendment reorganizing the Colorado Department of Education 238,100 (65.03%) 128,054 (34.97%) An initiative establishing regulations for animal racing 238,371 (56.50%) 183,292 (43.50%) A constitutional amendment allowing localities to prohibit alcohol 120,799 (26.54%) 334,331 (73.46%) A constitutional amendment increasing the old age pension to $55 a month () 166,031 (35.96%) 295,712 (64.04%)
1950{{en dash}}1999
1950
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 A constitutional amendment modifying home rule for some localities 145,780 (61.39%) 91,700 (38.61%) A constitutional amendment modifying some rules relating to the General Assembly 134,048 (58.09%) 96,709 (41.91%) A constitutional amendment exempting some members of executive departments from the civil service 103,848 (33.26%) 208,408 (66.74%)
1952
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 Measure 4 Measure 5 Measure 6 A constitutional amendment modifying salaries and retirement procedures for judges 223,365 (58.28%) 159,883 (41.72%) A constitutional amendment modifying public utilities regulations 173,652 (46.01%) 203,732 (53.99%) A constitutional amendment exempting some forms of property from tax 96,584 (25.67%) 279,682 (74.33%) A constitutional amendment creating a severance tax on some gasoline products 177,125 (35.96%) 315,392 (64.04%) An initiative prohibiting firefighters from working more than 60 hours a week 169,126 (38.84%) 266,275 (61.16%) A constitutional amendment legalizing slot machines 152,570 (31.98%) 324,548 (68.02%)
1954
Measure name Description Status Yes votes No votes Amendment 1 Amendment 2 Amendment 3 Amendment 4 Amendment 5 Referendum 6 Amendment 7 Amendment 8 A constitutional amendment granting the public utilities commission regulatory authority 229,175 (64.90%) 123,932 (35.10%) A constitutional amendment excluding the Director of the Water Conservation Board from civil service 133,073 (45.44%) 159,800 (54.56%) A constitutional amendment setting elected state officials terms at four years 123,112 (44.18%) 155,539 (55.82%) A constitutional amendment requiring income deductions from old age pensions 104,079 (31.73%) 223,965 (68.27%) A constitutional amendment reapportioning the General Assembly 116,695 (42.30%) 159,188 (57.70%) An initiative allowing for anticipation warrants for highway purposes 177,697 (57.26%) 132,628 (42.74%) A constitutional amendment modifying personal property taxation 143,486 (49.14%) 148,517 (50.86%) A constitutional amendment setting county officials terms at four years 168,055 (52.63%) 151,271 (47.37%)
1956
Measure name Description Status Yes votes No votes Amendment 1 Amendment 2 Amendment 3 Amendment 4 Amendment 5 A constitutional amendment setting elected state officials terms at four years 316,611 (62.22%) 192,267 (37.78%) A constitutional amendment exempting some personal effects from taxation 320,134 (61.97%) 196,423 (38.03%) A constitutional amendment modifying the merit system for civil service 156,077 (31.82%) 334,498 (68.18%) A constitutional amendment reapportioning the General Assembly 158,204 (31.18%) 349,195 (68.82%) A constitutional amendment raising the old age pension to $100 a month and means-testing it () 364,961 (65.72%) 190,366 (34.28%)
1958
Measure name Description Status Yes votes No votes Amendment 1 Amendment 2 Amendment 3 Amendment 4 Amendment 5 A constitutional amendment modifying the civil service to make it more competitive 218,426 (48.52%) 231,725 (51.48%) A constitutional amendment modifying the salaries for county and precinct officers 146,328 (36.65%) 252,903 (63.35%) A constitutional amendment modifying county governments 158,666 (39.64%) 241,636 (60.36%) A constitutional amendment legalizing nonprofit lotteries, bingo games, and raffles 244,929 (50.98%) 235,482 (49.02%) A constitutional amendment establishing rules for labor union membership 200,319 (38.61%) 318,480 (61.39%)
1960
Measure name Description Status Yes votes No votes Proposal 1 Proposal 2 Proposal 3 Proposal 4 Proposal 5 Proposal 7 A constitutional amendment modifying the civil service 214,956 (38.57%) 342,352 (61.43%) A constitutional amendment modifying the election process for county officials 231,025 (41.31%) 328,241 (58.69%) A constitutional amendment creating a department of wildlife conservation 190,366 (31.24%) 419,048 (68.76%) An initiative establishing daylight saving time 280,115 (45.46%) 336,033 (54.54%) A constitutional amendment imposing a sales tax on all items except drugs and food 200,566 (33.20%) 403,470 (66.80%) An initiative exempting some governor appointees from civil service 170,736 (28.40%) 430,394 (71.60%)
1962
Measure name Description Status Yes votes No votes Proposal 1 Proposal 2 Proposal 3 Proposal 4 Proposal 5 Proposal 6 Proposal 7 Proposal 8 A constitutional amendment reorganizing the judicial department 303,740 (64.24%) 169,052 (35.76%) A constitutional amendment modifying Denver city and county officers 157,249 (38.20%) 254,354 (61.80%) A constitutional amendment redefining "income" for state purposes 231,784 (53.46%) 201,795 (46.54%) A constitutional amendment establishing minimum voter qualifications 303,942 (68.88%) 137,323 (31.12%) A constitutional amendment modifying property tax assessment procedures 215,413 (50.34%) 212,477 (49.66%) A constitutional amendment changing term lengths for county officials 207,442 (49.83%) 208,867 (50.17%) A constitutional amendment reapportioning the General Assembly 305,700 (63.90%) 172,725 (36.10%) A constitutional amendment creating a reapportionment commission 149,822 (32.46%) 311,749 (67.54%)
1964
Measure name Description Status Yes votes No votes Proposal 1 Proposal 2 A constitutional amendment creating a state auditor under the legislature 304,066 (63.71%) 173,221 (36.29%) A constitutional amendment allowing voters to abolish their County Superintendent's office 308,049 (63.38%) 177,967 (36.62%)
1966
Measure name Description Status Yes votes No votes Amendment 1 Amendment 2 Amendment 3 Amendment 4 Amendment 5 Referred Law 1 Refereed Law 2 A constitutional amendment limiting the number of executive departments at the state level to no more than 20 369,366 (69.51%) 162,038 (30.49%) A constitutional amendment creating an ownership tax on motor vehicles 318,102 (60.10%) 211,177 (39.90%) A constitutional amendment creating the Colorado Commission on Judicial Qualifications 293,771 (52.90%) 261,558 (47.10%) A constitutional amendment establishing a 35-member Senate and a 65-member House of Representatives 374,884 (70.34%) 158,067 (29.66%) A constitutional amendment establishing a limit on property tax increases 178,245 (31.55%) 386,650 (68.45%) An initiative establishing daylight saving time 346,274 (57.26%) 258,490 (42.74%) An initiative abolishing the death penalty 193,245 (33.15%) 389,707 (66.85%)
1968
Measure name Description Status Yes votes No votes Amendment 1 Amendment 2 Amendment 3 A constitutional amendment requiring the Governor and Lieutenant Governor be elected jointly 428,522 (67.73%) 204,186 (32.27%) A constitutional amendment exempting some property from taxation 284,404 (47.93%) 308,915 (52.07%) A constitutional amendment modifying the salaries of county officials 307,356 (51.50%) 288,873 (48.50%)
1970
Measure name Description Status Yes votes No votes Amendment 1 Amendment 2 Amendment 3 Amendment 4 Amendment 5 A constitutional amendment exempting department heads from civil service 293,621 (57.21%) 219,639 (42.89%) A constitutional amendment modifying the merit system for state employment 346,663 (66.40%) 175,076 (33.60%) A constitutional amendment allowing counties to have home rule 325,512 (65.56%) 170,986 (34.44%) A constitutional amendment reducing the age and residency requirements for voting 240,622 (45.19%) 291,858 (54.81%) A constitutional amendment modifying residency requirements for voting 336,977 (64.60%) 184,694 (35.40%)
1972
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 Measure 4 Measure 5 Measure 6 Measure 7 Measure 8 Measure 9 Measure 10 Measure 11 Measure 12 An initiative to legalize sweepstakes races 408,704 (49.49%) 417,149 (50.51%) A constitutional amendment creating a state student loan program 443,660 (54.13%) 375,948 (45.87%) A constitutional amendment codifying a right to gender equality 531,415 (64.28%) 295,254 (35.72%) A constitutional amendment modifying the structure of the University of Colorado's Board of Regents 418,825 (52.00%) 386,645 (48.00%) A constitutional amendment allowing the salaries of elected officials to change while they are in office 233,678 (29.04%) 571,083 (70.96%) A constitutional amendment allowing for a private lottery hosted by the United States Sweepstakes Corporation 161,281 (19.93%) 647,817 (80.06%) A constitutional amendment limiting property taxes 192,913 (23.53%) 627,007 (76.47%) A constitutional amendment preventing the state from instituting new taxes or loaning money for the 1976 Winter Olympics 514,228 (59.44%) 350,964 (40.56%) An initiative instituting new transparency requirements for public officials 491,073 (60.11%) 325,819 (39.89%) An initiative creating a regulatory agency to govern utility rates 350,264 (42.80%) 468,154 (57.20%) An initiative requiring drivers to hold vehicle insurance 208,155 (25.89%) 595,887 (74.11%) A constitutional amendment limiting property taxes 167,882 (21.09%) 628,201 (78.91%)
1974
Measure name Description Status Yes votes No votes Amendment 1 Amendment 2 Amendment 3 Amendment 4 Amendment 5 Amendment 6 Amendment 7 Amendment 8 Amendment 9 Amendment 10 A constitutional amendment requiring county territory changes be approved by voters 409,174 (58.35%) 292,040 (41.65%) An initiative imposing the death penalty on people convicted of class 1 felonies 451,403 (61.15%) 286,805 (38.85%) A constitutional amendment requiring regular reports by the State Treasurer 425,505 (63.26%) 247,141 (36.74%) A constitutional amendment allowing localities to invest in energy sector corporations 481,513 (82.75%) 100,360 (17.25%) A constitutional amendment creating a commission to govern Denver's growth 397,442 (61.17%) 252,256 (38.83%) A constitutional amendment modifying the functions of the executive and legislative departments 386,284 (59.96%) 257,967 (40.04%) A constitutional amendment modifying the aviation fuel tax 375,390 (56.13%) 293,430 (43.87%) A constitutional amendment prohibiting forced busing 485,536 (68.74%) 220,842 (31.26%) A constitutional amendment creating the Colorado Reapportionment Commission 386,725 (60.20%) 255,725 (39.80%) A constitutional amendment requiring voter approval before nuclear detonations 399,818 (57.85%) 291,284 (42.15%)
1976
Measure name Description Status Yes votes No votes Measure 1 Measure 2 Measure 3 Measure 4 Measure 5 Measure 6 Measure 7 Measure 8 Measure 9 Measure 10 An initiative authorizing some sweepstakes races 522,068 (50.53%) 511,135 (49.47%) A constitutional amendment modifying the way motor vehicles are categorized for tax purposes 627,562 (61.75%) 388,666 (38.25%) A constitutional amendment requiring a two-thirds vote in the legislature before the construction of a nuclear power plant 305,142 (29.34%) 734,843 (70.66%) A constitutional amendment exempting some state government officials from the standard personnel system 237,853 (23.63%) 768,687 (76.37%) A constitutional amendment allowing county commissioners to modify other elected officials' salaries 376,386 (37.43%) 629,136 (62.57%) A constitutional amendment revoking the right to gender equality 401,943 (38.99%) 629,060 (61.01%) An initiative exempting food from sales tax 406,311 (38.87%) 639,058 (61.13%) An initiative requiring the recycling of beverage containers 346,335 (33.03%) 702,292 (66.97%) An initiative creating a department to represent public utility customers in government meetings 304,594 (39.97%) 711,627 (70.03%) A constitutional amendment requiring voter approval of all taxes 259,201 (25.25%) 767,157 (74.75%)
1978
Measure name Description Status Yes votes No votes Amendment 1 Amendment 2 A constitutional amendment clarifying the procedure for replacing county commissioners who resign during their term 442,071 (66.13%) 226,432 (33.87%) A constitutional amendment limiting state spending 295,616 (41.27%) 420,759 (58.73%)
1980
Measure name Description Status Yes votes No votes Amendment 1 Amendment 2 Amendment 3 Amendment 4 Amendment 5 Amendment 6 A constitutional amendment requiring that measure petition signers also be registered voters 638,731 (60.14%) 423,322 (39.86%) A constitutional amendment creating a state-run lottery 660,213 (59.83%) 443,289 (40.17%) A constitutional amendment allowing towns and cities to annex unincorporated areas with voter approval 601,302 (56.65%) 460,084 (34.35%) A constitutional amendment relating to real estate sales 381,821 (33.87%) 745,625 (66.13%) A constitutional amendment allowing banks to open additional branches 292,323 (25.58%) 850,454 (74.42%) A constitutional amendment restructuring the regional transportation district's board 570,049 (56.17%) 444,902 (43.83%)
1982
Measure name Description Status Yes votes No votes Amendment 1 Amendment 2 Amendment 3 Amendment 4 Amendment 5 Amendment 6 Amendment 7 A constitutional amendment modifying property tax assessments 551,334 (65.49%) 290,590 (34.51%) A constitutional amendment allowing bail to be denied to people accused of capital offenses 737,813 (82.52%) 156,336 (17.48%) A constitutional amendment establishing a system for judicial discipline 659,905 (77.33%) 193,425 (22.67%) A constitutional amendment modifying some legislative procedures 442,601 (54.27%) 372,897 (45.73%) An initiative requiring beverage containers to have a minimum refund value 242,653 (25.51%) 708,564 (75.45%) A constitutional amendment ending nuclear weapons production 325,985 (36.60%) 564,606 (63.40%) An initiative allowing grocery stores to sell wines with alcohol contents below 14% 333,467 (35.00%) 620,190 (65.00%)
1984
Measure name Description Status Yes votes No votes Amendment 1 Amendment 2 Amendment 3 Amendment 4 Amendment 5 A constitutional amendment creating the office of the Commissioner of Insurance 641,587 (58.81%) 449,362 (41.19%) A constitutional amendment requiring voter registration for all election types 811,130 (72.73%) 304,208 (27.27%) A constitutional amendment prohibiting the use of state funds for abortion 627,343 (50.39%) 617,637 (49.61%) An initiative allowing voter registration alongside driver's license applications 705,725 (61.18%) 447,803 (38.82%) A constitutional amendment allowing some forms of casino gambling 406,989 (33.18%) 819,533 (66.82%)
1986
Measure name Description Status Yes votes No votes Amendment 1 Amendment 2 Amendment 3 Amendment 4 A constitutional amendment modifying the merit system for state employment 461,004 (48.57%) 488,226 (51.43%) A constitutional amendment allowing county commissioners to modify other elected officials salaries 406,960 (45.24%) 492,511 (54.76%) A constitutional amendment requiring that home rule municipalities abide by an initiative and referendum system 455,053 (53.42%) 396,738 (46.58%) A constitutional amendment preventing new taxes without voter approval 375,097 (37.50%) 625,158 (62.50%)
1988
Measure name Description Status Yes votes No votes Amendment 1 Amendment 2 Amendment 3 Amendment 4 Amendment 5 Amendment 6 Amendment 7 Amendment 8 A constitutional amendment making English the official state language 829,617 (61.15%) 527,053 (38.85%) A constitutional amendment modifying expenses reimbursements 645,002 (53.93%) 551,118 (46.07%) A constitutional amendment restricting General Assembly sessions to no more than 120 days 641,363 (52.33%) 584,359 (47.77%) A constitutional amendment creating an eight-hour workday, modifying age qualifications to vote, and repealing some obsolete provisions 799,250 (67.21%) 389,906 (32.79%) A constitutional amendment exempting some forms of property from taxation 624,021 (51.90%) 578,295 (48.10%) A constitutional amendment requiring voter approval for new taxes 567,884 (42.19%) 778,075 (57.81%) A constitutional amendment allowing state funds to be used for abortion 534,070 (39.76%) 809,078 (60.24%) A constitutional amendment modifying some General Assembly procedures 852,448 (71.96%) 332,159 (28.04%)
1990
Measure name Description Status Yes votes No votes Amendment 1 Amendment 2 Amendment 3 Amendment 4 Amendment 5 A constitutional amendment requiring voter approval for some tax increases 494,934 (48.93%) 516,534 (51.07%) A referendum modifying the presidential primary system 582,835 (61.16%) 370,166 (38.84%) A constitutional amendment repealing some obsolete provisions 717,544 (77.84%) 204,294 (22.16%) A constitutional amendment allowing limited gambling in Black Hawk, Central, and Cripple Creek cities 574,620 (57.31%) 428,096 (42.39%) A constitutional amendment instituting term limits for most statewide elected officials 708,975 (70.99%) 289,664 (29.01%)
1992
Measure name Description Status Yes votes No votes Amendment 1 Amendment 2 Amendment 3 Amendment 4 Amendment 5 Amendment 6 Amendment 7 Amendment 8 Amendment 9 Amendment 10 Referendum A Referendum B Referendum C A constitutional amendment establishing a Taxpayer Bill of Rights (TABOR) 812,308 (53.68%) 700,906 (46.32%) A constitutional amendment prohibiting local governments for granted protected status to sexual orientation 813,966 (53.41%) 710,151 (46.59%) A constitutional amendment authorizing some forms of gambling in a variety of cities and counties 448,779 (29.74%) 1,060,168 (70.26%) A constitutional amendment authorizing some forms of gambling in a variety of cities and counties 414,699 (27.61%) 1,087,136 (72.39%) A constitutional amendment authorizing some forms of gambling in Parachute 414,489 (27.59%) 1,087,713 (72.41%) An initiative requiring state-wide educational standards, testing, and implementing a wide variety of school funding reforms 693,231 (45.61%) 826,787 (54.39%) A constitutional amendment creating a voucher program for schools 503,162 (33.21%) 1,011,901 (55.79%) A constitutional amendment creating the Great Outdoors Colorado Program 876,424 (58.20%) 629,490 (41.80%) A constitutional amendment allowing limited gambling in the Central Platte Valley 292,961 (19.62%) 1,200,336 (80.38%) An initiative banning the use of bait and dogs in black bear hunting 1,054,032 (69.70%) 458,260 (30.30%) A constitutional amendment establishing victim rights 1,139,427 (80.18%) 281,731 (19.82%) A constitutional amendment repealing some obsolete provisions 1,081,463 (78.02%) 304,718 (21.98%) A constitutional amendment allowing for limited gambling in localities with voter approval 1,075,649 (76.01%) 339,521 (23.99%)
1993
Measure name Description Status Yes votes No votes Referendum A An initiative establishing a sales tax on tourist-related items for the purpose of funding tourism marketing 274,989 (44.82%) 338,546 (55.18%)
1994
Measure name Description Status Yes votes No votes Amendment 1 Amendment 11 Amendment 12 Amendment 13 Amendment 15 Amendment 16 Amendment 17 Amendment 18 Referendum A Referendum B Referendum C A constitutional amendment increasing the cigarette tax rate to 50% 429,847 (38.53%) 685,860 (61.47%) A constitutional amendment increasing the benefits of worker's compensation insurance 369,741 (33.59%) 730,963 (66.41%) A constitutional amendment substantially modifying campaign contribution rules 246,723 (22.53%) 848,140 (77.47%) A constitutional amendment allowing airports to host slot machines and allowing limited gambling in Manitou Springs 90,936 (8.28%) 1,007,557 (91.72%) A constitutional amendment requiring that at least 60% of candidate contributions come from individuals rather than organizations 508,029 (46.35%) 588,072 (53.65%) A constitutional amendment preventing the state judiciary from restricting freedom of speech past existing federal precedent 404,156 (36.73%) 696,040 (63.27%) A constitutional amendment placing term limits on a variety of public offices 554,238 (51.05%) 531,521 (48.95%) A constitutional amendment relating to financial responsibility for medical assistance 334,029 (31.85%) 714,653 (68.15%) A constitutional amendment requiring that ballot measures placed via petition be confined to a single subject 687,527 (65.68%) 359,298 (34.32%) A constitutional amendment requiring the publication of a nonpartisan voter information pamphlet every election 529,749 (50.44%) 520,438 (49.56%) A constitutional amendment denying bail to people accused of violent felonies 822,632 (76.93%) 246,726 (23.07%)
1995
Measure name Description Status Yes votes No votes Referendum A A referendum allowing the state to incur debt for the purposes of funding prisons 291,736 (45.11%) 355,031 (54.89%)
1996
Measure name Description Status Yes votes No votes Amendment 11 Amendment 12 Amendment 13 Amendment 14 Amendment 15 Amendment 16 Amendment 17 Amendment 18 Referendum A Referendum B Referendum C Referendum D A constitutional amendment eliminating many property tax exemptions 242,543 (16.68%) 1,211,637 (83.32%) A constitutional amendment setting term limits for many public offices and proposing a federal amendment to the same effect 768,257 (54.01%) 654,124 (45.99%) A constitutional amendment modifying the ballot measure process 435,995 (31.07%) 967,266 (68.93%) A constitutional amendment prohibiting leghold traps, body-gripping traps, poisons, and snares for hunting 752,413 (52.10%) 691,733 (47.90%) An initiative limiting political campaign contributions 928,148 (65.79%) 482,551 (34.21%) A constitutional amendment modifying some rules relating to state lands held in trust 708,502 (51.92%) 656,095 (48.08%) A constitutional amendment specifying that parents have the right to control their children's upbringing, education, values, and discipline 615,202 (42.35%) 837,606 (57.65%) A constitutional amendment allowing some forms of gambling in Trinidad 440,173 (31.46%) 958,991 (68.54%) A constitutional amendment requiring that proposed constitutional amendments reach a 60% vote threshold to pass 544,543 (40.89%) 787,134 (59.11%) A constitutional amendment lengthening the time between the mailing of voter information pamphlets and ballots 739,435 (54.87%) 608,219 (45.13%) A constitutional amendment authorizing the General Assembly to regulate county sheriff's offices 754,339 (56.10%) 590,402 (43.90%) A constitutional amendment modifying unemployment compensation insurance 376,860 (29.32%) 908,476 (70.68%)
1997
Measure name Description Status Yes votes No votes Amendment 1 A constitutional amendment raising the fuel tax and vehicle registration fees for the purpose of funding the Transportation Department 109,663 (15.79%) 585,055 (84.21%)
1998
Measure name Description Status Yes votes No votes Amendment 11 Amendment 12 Amendment 13 Amendment 14 Amendment 15 Amendment 16 Amendment 17 Amendment 18 Referendum A Referendum B Referendum C A constitutional amendment prohibiting partial-birth abortions 617,977 (48.52%) 655,723 (51.48%) An initiative requiring parental notification before an abortion is performed on an emancipated minor 707,021 (54.87%) 581,481 (45.13%) A constitutional amendment requiring uniform application of livestock laws 475,664 (38.70%) 753,509 (61.30%) An initiative increasing regulations of commercial hog farms 790,825 (64.21%) 440,766 (35.79%) An initiative requiring that water flow meters in the San Luis Valley be certified by the state engineer 292,977 (23.83%) 936,698 (76.17%) A constitutional amendment instituting fees on water pumped from state lands in the Rio Grande Water Conservation District 297,872 (24.23%) 931,566 (75.77%) A constitutional amendment granting a tax credit to the parents of schoolchildren 515,942 (39.72%) 782,982 (60.28%) A constitutional amendment allowing candidates for public office to submit declarations of voluntary term limits 613,557 (50.41%) 603,651 (49.59%) A constitutional amendment relating to healthcare 505,903 (45.32%) 610,449 (54.68%) An initiative allowing the state to hold up to $200,000,000 in excess tax revenue for the purpose of funding school construction and transportation () 477,504 (38.41%) 765,654 (61.59%) A constitutional amendment creating the city and county of Broomfield 670,781 (61.29%) 423,603 (38.71%)
1999
Measure name Description Status Yes votes No votes Referendum A A referendum allowing the state to take on additional debt for the purpose of funding transportation projects 477,982 (61.68%) 296,971 (38.32%)
2000{{en dash}}present
2000
Measure name Description Status Yes votes No votes Amendment 20 Amendment 21 Amendment 22 Amendment 23 Amendment 24 Amendment 25 Referendum A Referendum B Referendum C Referendum D Referendum E Referendum F A constitutional amendment legalizing medical marijuana 915,527 (53.53%) 786,983 (46.47%) A constitutional amendment introducing small tax cuts 569,788 (33.98%) 1,107,155 (66.02%) An initiative requiring background checks on gun purchases at gun shows 1,197,593 (70.05%) 512,084 (29.95%) A constitutional amendment modifying public school funding 882,628 (52.71%) 791,934 (47.29%) A constitutional amendment requiring voter approval for local government development plans 511,885 (30.11%) 1,888,138 (69.89%) A constitutional amendment requiring a 24-hour waiting period before abortions 664,420 (39.44%) 1,020,029 (60.56%) A constitutional amendment establishing a homestead tax exemption for senior citizens 843,620 (54.74%) 697,398 (45.26%) A constitutional amendment modifying the timeframe for adoption of a redistricting plan for the General Assembly 852,098 (60.48%) 556,769 (39.52%) A constitutional amendment modifying the selection process for county surveyors 661,704 (45.45%) 794,310 (54.55%) A constitutional amendment removing some outdated provisions 1,063,345 (71.56%) 422,629 (28.44%) An initiative allowing Colorado to enter multi-state lotteries 836,390 (51.64%) 783,275 (48.36%) An initiative allowing the state to utilize excess state revenues for the purpose of funding school performance grants 697,673 (44.11%) 887,947 (55.89%)
2001
Measure name Description Status Yes votes No votes Amendment 26 Referendum A An initiative allowing the state to spend $50,000,000 for the purpose of improving Interstate 70 () 283,184 (34.10%) 547,213 (65.90%) An initiative increasing the outdoor recreation trust fund by $115,000,000 () 478,501 (57.58%) 352,585 (42.42%)
2002
Measure name Description Status Yes votes No votes Amendment 27 Amendment 28 Amendment 29 Amendment 30 Amendment 31 Referendum A Referendum B Referendum C Referendum D Referendum E A constitutional amendment limiting corporation and labor union contributions to political campaigns 890,390 (66.50%) 448,599 (33.50%) An initiative requiring voting by mail 557,573 (42.41%) 757,299 (57.59%) An initiative substantially modifying the candidate selection process for primary elections 509,109 (39.84%) 768,683 (60.14%) A constitutional amendment allowing same-day voter registration 530,442 (39.25%) 821,050 (60.75%) A constitutional amendment prohibiting bilingual education in most circumstances 608,264 (43.78%) 781,016 (56.22%) A constitutional amendment eliminating term limits for district attorneys 461,848 (35.27%) 847,602 (64.73%) A constitutional amendment allowing localities to co-own healthcare facilities with private companies 510,209 (40.76%) 741,568 (59.24%) A constitutional amendment allowing the General Assembly to regulate the position of county coroner 900,611 (70.92%) 369,351 (29.08%) A constitutional amendment removing some obsolete provisions 899,914 (71.89%) 351,886 (28.11%) A referendum establishing March 31 as "Cesar Chavez Day" 275,947 (20.61%) 1,062,780 (79.39%)
2003
Measure name Description Status Yes votes No votes Amendment 32 Amendment 33 Referendum A A constitutional amendment modifying property tax assessment 203,449 (22.45%) 702,829 (77.55%) A constitutional amendment allowing some limited forms of gambling 180,959 (19.09%) 766,893 (80.91%) An referendum allowing the state to borrow up to $2,000,000,000 to fund water projects () 307,412 (32.87%) 627,716 (67.13%)
2004
Measure name Description Status Yes votes No votes Amendment 34 Amendment 35 Amendment 36 Amendment 37 Referendum A Referendum B A constitutional amendment prohibiting laws which would limit property owner's ability to recover damages from construction projects 469,566 (23.45%) 1,533,002 (76.55%) A constitutional amendment raising the tobacco tax for the purpose of funding educational and preventive health programs 1,258,086 (61.38%) 791,627 (38.62%) A constitutional amendment allowing Colorado's electoral votes to be distributed proportionally 696,770 (34.78%) 1,306,834 (65.22%) An initiative requiring that a certain percentage of electricity be generated from renewable sources 1,066,023 (53.61%) 922,577 (46.39%) A constitutional amendment substantially modifying the state civil service system 696,007 (39.19%) 1,080,136 (60.81%) A constitutional amendment removing some obsolete provisions relating to education 1,247,998 (69.00%) 560,811 (31.00%)
2005
Measure name Description Status Yes votes No votes Referendum C Referendum D An initiative allowing the state to spend money collected over the TABOR limit on health care, public education, transportation, and fire and police projects 600,222 (52.06%) 552,662 (47.94%) An initiative allowing the state to borrow up to $2,000,720,000 () 567,540 (49.38%) 581,751 (50.62%)
2006
Measure name Description Status Yes votes No votes Amendment 38 Amendment 39 Amendment 40 Amendment 41 Amendment 42 Amendment 43 Amendment 44 Referendum E Referendum F Referendum G Referendum H Referendum I Referendum J Referendum K A constitutional amendment expanding the ability for citizens to place measures on the ballot 456,468 (30.67%) 1,027,550 (69.24%) A constitutional amendment requiring that 65% of school district budgets be allocated towards classroom instruction 569,483 (37.61%) 944,735 (62.39%) A constitutional amendment introducing term limits for judges in the Colorado Supreme Court and Colorado Court of Appeals 648,199 (42.91%) 862,349 (57.09%) A constitutional amendment prohibiting elected officials and their family members from accepting gifts and restricting former elected official's abilities to become lobbyists 938,888 (62.57%) 561,646 (37.43%) A constitutional amendment increasing the minimum wage and tying it to inflation 823,526 (53.30%) 721,530 (46.70%) A constitutional amendment prohibiting same-sex marriages 855,126 (55.02%) 699,030 (44.98%) An initiative legalizing the possession of marijuana in small amounts 636,938 (41.08%) 913,411 (58.92%) A constitutional amendment providing a property tax exemption to some disabled veterans 1,195,907 (79.24%) 313,292 (20.76%) A constitutional amendment removing some deadlines relating to recall elections 626,015 (44.68%) 775,207 (55.32%) A constitutional amendment eliminating some obsolete provisions 1,092,293 (76.08%) 343,495 (23.92%) An initiative relating to the income tax deduction limit 744,475 (50.74%) 722,651 (49.26%) An initiative granting same-sex couples the same rights as other domestic partnerships 734,385 (47.65%) 806,717 (52.35%) An initiative requiring that school districts spend at least 65% of their budget on student achievement-related services 620,790 (41.53%) 874,151 (58.47%) An initiative requiring the Attorney General of Colorado to engage in a lawsuit against the United States to force the enforcement of existing immigration laws 830,628 (55.72%) 660,012 (44.28%)
2008
Measure name Description Status Yes votes No votes Amendment 46 Amendment 47 Amendment 48 Amendment 49 Amendment 50 Amendment 51 Amendment 52 Amendment 54 Amendment 58 Amendment 59 Referendum L Referendum M Referendum N Referendum O A constitutional amendment prohibiting discrimination and preferential treatment in public employment, education, and contracting 1,102,046 (49.19%) 1,138,134 (50.81%) A constitutional amendment prohibition union contracts which require employees to pay fees to stay employed 1,003,056 (43.89%) 1,282,501 (56.11%) A constitutional amendment defining personhood as beginning at conception 618,779 (26.79%) 1,691,237 (73.21%) A constitutional amendment prohibiting public employers from using payroll deductions to benefit private organizations 882,428 (39.24%) 1,366,620 (60.76%) A constitutional amendment allowing some forms of gambling in Central, Black Hawk, and Cripple Creek cities 1,330,566 (58.70%) 936,254 (41.30%) A constitutional amendment increasing the sales tax for the purpose of funding services for the developmentally disabled 853,211 (37.63%) 1,414,065 (62.37%) A constitutional amendment creating a trust fund for highway development 790,124 (35.78%) 1,418,009 (64.22%) A constitutional amendment limiting campaign contributions from government contract holders 1,130,098 (51.21%) 1,076,694 (48.79%) An initiative modifying the severance tax 944,191 (41.95%) 1,306,782 (58.05%) A constitutional amendment relating to education funding and rebates 1,010,409 (45.69%) 1,201,220 (54.31%) A constitutional amendment lowering the age requirement to serve as a General Assembly member to 21 1,010,896 (46.50%) 1,162,296 (53.50%) A constitutional amendment eliminating some obsolete provisions relating to land value increases 1,307,770 (62.26%) 792,678 (37.74%) A constitutional amendment eliminating some obsolete provisions relating to alcohol 1,449,383 (68.75%) 658,684 (31.25%) A constitutional amendment modifying the requirements to place ballot measures on the ballot 1,004,925 (47.50%) 1,110,877 (52.50%)
2010
Measure name Description Status Yes votes No votes Amendment P Amendment Q Amendment R Amendment 60 Amendment 61 Amendment 62 Amendment 63 Proposition 101 Proposition 102 A constitutional amendment transferring regulatory power over gambling from the Department of State to the Department of Revenue 611,664 (37.67%) 1,012,193 (62.33%) A constitutional amendment establishing some government continuity procedures 944,446 (57.52%) 697,373 (42.48%) A constitutional amendment eliminating property taxes for some owners 616,516 (38.34%) 991,347 (61.66%) A constitutional amendment limiting property tax increases 427,912 (24.50%) 1,318,507 (75.50%) A constitutional amendment prohibiting state and local governments from borrowing money without voter approval 474,772 (26.99%) 1,284,307 (73.01%) A constitutional amendment defining personhood as beginning at conception 509,062 (29.47%) 1,218,490 (70.53%) A constitutional amendment preventing the establishment of a universal healthcare system 800,155 (46.90%) 905,944 (53.10%) An initiative substantially reforming the motor vehicle, income, and telecom taxes 564,588 (32.31%) 1,183,000 (67.69%) An initiative allowing first-time offenders of nonviolent misdemeanors to be released pretrial without bail 636,444 (38.03%) 1,037,103 (61.97%)
2011
Measure name Description Status Yes votes No votes Proposition 103 An initiative increasing the state income and sales tax 349,746 (36.30%) 611,907 (63.60%)
2012
Measure name Description Status Yes votes No votes Amendment 64 Amendment 65 Amendment S A constitutional amendment legalizing marijuana 1,383,139 (55.32%) 1,116,894 (44.68%) A constitutional amendment relating to corporate contributions to political campaigns 1,762,515 (74.01%) 619,073 (25.99%) A constitutional amendment modifying the state personnel system 1,276,405 (56.35%) 988,541 (43.65%)
2013
Measure name Description Status Yes votes No votes Proposition AA Amendment 66 An initiative imposing several new taxes on marijuana sales for the purpose of funding school construction and marijuana regulation 902,181 (65.27%) 479,992 (34.73%) A constitutional amendment raising some state taxes for the purpose of funding education 496,151 (35.54%) 899,927 (64.46%)
2014
Measure name Description Status Yes votes No votes Amendment 67 Amendment 68 Proposition 104 Proposition 105 A constitutional amendment redefining the terms "person" and "child" to include human fetuses 702,544 (35.13%) 1,297,299 (64.87%) A constitutional amendment allowing limited gambling at some horse racetracks for the purpose of funding a kindergarten fund 597,239 (29.62%) 1,419,095 (70.38%) An initiative requiring collective bargaining negotiations for school employees to be open to the public 1,364,747 (70.09%) 582,473 (29.91%) An initiative requiring that food containing GMOs carry a label clearly identifying them as such 694,738 (34.53%) 1,317,288 (65.47%)
2015
Measure name Description Status Yes votes No votes Proposition BB An initiative allowing the state to retain $66,000,000 in marijuana tax revenues for the purpose of funding school construction projects 847,380 (69.39%) 373,734 (30.61%)
2016
Measure name Description Status Yes votes No votes Amendment T Amendment U Amendment 69 Amendment 70 Amendment 71 Amendment 72 Proposition 106 Proposition 107 Proposition 108 A constitutional amendment prohibiting slavery as a punishment for a crime 1,280,037 (49.68%) 1,296,722 (50.32%) A constitutional amendment exempting some assets from taxation 1,103,593 (43.85%) 1,412,923 (56.15%) A constitutional amendment creating a universal healthcare system for Colorado residents 568,683 (21.23%) 2,109,868 (78.77%) A constitutional amendment raising the minimum wage to $12.00 an hour 1,517,903 (55.36%) 1,224,189 (44.64%) A constitutional amendment requiring initiative petitioners to gather signatures in all 35 state senate districts and imposing a 55% vote threshold for future constitutional amendments 1,476,948 (55.69%) 1,175,324 (44.31%) An initiative raising taxes on cigarettes by $1.75 1,286,851 (46.94%) 1,454,342 (53.06%) An initiative legalizing assisted death 1,765,786 (64.87%) 956,263 (35.13%) An initiative creating an open primary system for presidential elections 1,701,599 (64.09%) 953,246 (35.91%) An initiative allowing unaffiliated electors to vote in primary elections 1,398,577 (53.27%) 1,227,117 (46.73%)
2018
Measure name Description Status Yes votes No votes Amendment A Amendment V Amendment W Amendment X Amendment Y Amendment Z Amendment 73 Amendment 74 Amendment 75 Proposition 109 Proposition 110 Proposition 111 Proposition 112 A constitutional amendment prohibiting slavery as a punishment for a crime 1,599,790 (66.21%) 816,342 (33.79%) A constitutional amendment lowering the minimum age for state legislators from 25 to 21 889,179 (36.19%) 1,567,560 (63.81%) A constitutional amendment allowing county clerks to consolidate judge retention questions on election ballots 1,262,713 (53.81%) 1,083,712 (46.19%) A constitutional amendment redefining "industrial hemp" 1,421,630 (60.64%) 922,597 (39.36%) A constitutional amendment creating a 12-member redistricting committee for congressional districts 1,711,008 (71.37%) 686,260 (28.63%) A constitutional amendment creating a 12-member redistricting committee for General Assembly districts 1,687,583 (71.07%) 687,113 (28.93%) A constitutional amendment establishing a graduated income tax 1,137,527 (46.43%) 1,312,331 (53.57%) A constitutional amendment requiring property owners be compensated if their property value decreased due to changes in state law 1,139,205 (46.42%) 1,315,182 (53.58%) A constitutional amendment allowing candidates in races where a self-funded candidate gives their campaign at least $1,000,000 to accept more than the standard campaign contribution limit 813,861 (34.04%) 1,576,835 (65.96%) An initiative allowing the state to issue $3,500,000,000 in bonds for the purpose of funding statewide transportation projects 952,814 (39.28%) 1,472,933 (60.72%) An initiative authorizing the state to issue $6,000,000,000 in bonds for the purpose of funding statewide transportation projects and raising the state sales tax rate 990,287 (40.61%) 1,448,535 (59.39%) An initiative capping payday loan interest rates 1,865,200 (77.25%) 549,357 (22.75%) An initiative mandating that new fracking projects be at least 2,500 feet from occupied buildings 1,116,738 (44.88%) 1,371,284 (55.12%)
2019
Measure name Description Status Yes votes No votes Proposition CC Proposition DD An initiative allowing the state to retain excess revenue and direct it towards transportation and education programs 724,060 (46.34%) 838,282 (53.66%) An initiative legalizing sports betting 800,745 (51.41%) 756,712 (48.59%)
2020
Measure name Description Status Yes votes No votes Amendment B Amendment C Amendment 76 Amendment 77 Proposition EE Proposition 113 Proposition 114 Proposition 115 Proposition 116 Proposition 117 Proposition 118 A constitutional amendment repealing the Gallagher Amendment 1,740,395 (57.52%) 1,285,136 (42.48%) A constitutional amendment lowering the entry requirements for charitable lotteries 1,586,973 (52.35%) 1,444,553 (47.65%) A constitutional amendment restricting voting to United States citizens 1,985,239 (62.90%) 1,171,137 (37.10%) A constitutional amendment allowing voters in Central, Black Hawk, and Cripple Creek cities to expand gambling 1,854,153 (60.54%) 1,208,414 (39.46%) An initiative to tax nicotine products for the purpose of funding health and education programs 2,134,608 (67.56%) 1,025,182 (32.44%) A referendum to uphold Colorado's membership in the National Popular Vote Interstate Compact 1,644,716 (52.33%) 1,498,500 (47.67%) An initiative requiring the Colorado Parks and Wildlife Commission to create a management plan to reintroduce gray wolves 1,590,299 (50.91%) 1,533,313 (49.09%) An initiative banning abortions after 22 weeks 1,292,787 (41.01%) 1,859,479 (58.99%) An initiative decreasing state income tax rates from 4.63% to 4.55% 1,821,702 (57.86%) 1,327,025 (42.14%) An initiative requiring statewide voter approval for some new state enterprises 1,573,114 (52.55%) 1,420,445 (47.45%) An initiative creating a paid family and medical leave program 1,804,546 (57.75%) 1,320,386 (42.25%)
2021
Measure name Description Status Yes votes No votes Amendment 78 Proposition 119 Proposition 120 A constitutional amendment transferring power over custodial funds from the state treasurer to the General Assembly 646,983 (43.03%) 856,704 (56.97%) An initiative raising the marijuana sales tax for the purpose of funding a Learning Enrichment and Academic Progress Program 701,479 (45.75%) 831,670 (54.25%) An initiative modifying property tax rates and allowing the state to spend $25,000,000 over the TABOR cap to reimburse localities for lost revenue 652,382 (42.96%) 866,197 (57.04%)
2022
Measure name Description Status Yes votes No votes Amendment D Amendment E Amendment F Proposition FF Proposition GG Proposition 121 Proposition 122 Proposition 123 Proposition 124 Proposition 125 Proposition 126 A constitutional amendment directing the Governor to assign judges to Colorado's 23rd judicial district 1,502,866 (67.38%) 727,409 (32.62%) A constitutional amendment extending a property tax exemption to the surviving spouses of deceased military service members 2,109,471 (87.93%) 298,514 (12.07%) A constitutional amendment modifying the rules relating to charitable gaming 930,370 (40.64%) 1,359,027 (59.36%) An initiative reducing the income tax deduction for some income brackets for the purpose of funding school meals 1,384,852 (56.75%) 1,055,583 (43.25%) An initiative requiring that ballot measures changing income taxes break down their impact by tax bracket 1,704,757 (71.92%) 665,476 (28.08%) An initiative decreasing the state income tax rate from 4.55% to 4.40% 1,581,163 (65.24%) 842,506 (34.76%) An initiative decriminalizing some psychedelic plants and fungi 1,269,992 (53.64%) 1,121,124 (46.36%) An initiative creating a state affordable housing fund 1,269,816 (52.61%) 1,143,974 (47.39%) An initiative increasing the number of liquor store licenses any single individual can hold 905,565 (37.69%) 1,497,346 (62.31%) An initiative allowing stores that are licensed to sell beer for off-site consumption to also sell wine for off-site consumption 1,228,404 (50.58%) 1,200,219 (49.42%) An initiative allowing stores that are licensed to sell alcohol for off-site consumption to also offer delivery 1,183,059 (48.86%) 1,238,074 (51.14%)
2023
Measure name Description Status Yes votes No votes Proposition HH Proposition II A measure modifying the level and distribution of property taxes 682,667 (40.69%) 995,259 (59.31%) A measure requiring the state to spend excess tobacco tax revenues from 2020's Proposition EE on preschool education programs 1,130,047 (67.53%) 543,405 (32.47%)
2024
Measure name Description Status Yes votes No votes Amendment G Amendment H Amendment I Amendment J Amendment K Amendment 79 Amendment 80 Proposition JJ Proposition KK Proposition 127 Proposition 128 Proposition 129 Proposition 130 Proposition 131 A constitutional amendment expanding veterans who qualify for property tax exemptions. 2,212,022 (73.13%) 812,638 (26.87%) A constitutional amendment modifying judicial discipline procedures. 2,150,820 (73.05%) 793,642 (26.95%) A constitutional amendment granting exceptions to the right to bail for certain violent crimes. 2,058,063 (68.34%) 953,652 (31.66%) A constitutional amendment repealing the definition of marriage as between a man and a woman. 1,982,200 (64.33%) 1,099,228 (35.67%) A constitutional amendment modifying deadlines for petitioning ballot initiatives. 1,293,879 (44.85%) 1,591,312 (55.15%) A constitutional amendment to guarantee the right to an abortion. 1,921,593 (61.97%) 1,179,261 (38.03%) A constitutional amendment to guarantee the right to school choice. 1,507,236 (49.32%) 1,548,679 (50.68%) A measure to retain taxes already collected by the state from sports betting. 2,340,370 (76.44%) 721,237 (23.56%) A measure to raise taxes on firearms and ammunition to fund gun safety measures. 1,675,123 (54.37%) 1,406,112 (45.63%) A measure prohibiting the hunting of mountain lions, lynxes, and bobcats. 1,382,048 (45.26%) 1,671,710 (54.74%) A measure to require certain convicted criminals to serve no less than 85% of their sentence. 1,869,231 (62.11%) 1,140,284 (37.89%) A measure to create a veterinary professional associates position in Colorado. 1,572,545 (52.76%) 1,407,814 (47.24%) A measure to increase state funding for law enforcement agencies. 1,583,118 (52.79%) 1,415,528 (47.21%) A measure to implement blanket primary elections and ranked-choice general elections. 1,385,060 (46.47%) 1,595,256 (53.53%)
2025
Measure name Description Status Yes votes No votes Proposition LL Proposition MM A measure to reimburse public schools that provide students free breakfast and lunch. 1,116,209 (66.20%) 569,836 (33.80%) A measure to reimburse public schools that provide students free breakfast and lunch. 1,010,644 (59.73%) 681,400 (40.27%)
2026
Measure name Description Status Yes votes No votes Initiative 85 Initiative 95 A measure to increase penalties for fentanyl offenses, require treatment for certain felony drug crimes, and limit the exceptions of sentences for fentanyl crimes and deaths. - - A constitutional amendment requiring state and local law enforcement to notify the Department of Homeland Security when a person is charged with a violent crime or has a prior felony conviction and the person is unlawfully present in the United States. - -
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