List of Colorado ballot measures

Elections in Colorado
Federal government Presidential elections 1876 1880 1884 1888 1892 1896 1900 1904 1908 1912 1916 1920 1924 1928 1932 1936 1940 1944 1948 1952 1956 1960 1964 1968 1972 1976 1980 1984 1988 1992 1996 2000 2004 2008 2012 2016 2020 Presidential caucuses and primaries Democratic 2008 2012 2016 2020 Republican 2008 2012 2016 2020 U.S. Senate elections 1876 1879 1883 sp 1885 1889 1891 1895 1897 1901 1903 1907 1909 1913 1913 sp 1914 1918 1920 1924 1924 sp 1926 1930 1932 1932 sp 1936 1938 1942 1942 sp 1944 1948 1950 1954 1956 1960 1962 1966 1968 1972 1974 1978 1980 1984 1986 1990 1992 1996 1998 2002 2004 2008 2010 2014 2016 2020 2022 2026 U.S. House elections 1876 1878 1880 1882 1884 1886 1888 1890 1892 1894 1896 1898 1900 1902 1904 1906 1908 1910 1912 1914 1916 1918 1920 1922 1924 1926 1927 1st sp 1928 1930 1932 1934 1936 1938 1940 3rd sp 1941 4th sp 1942 1944 1st sp 1946 1948 1950 1952 1954 1956 1958 1960 1962 1964 1966 1968 1970 1972 1974 1976 1978 1980 1982 1983 6th sp 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022
State government General elections 2010 2014 2018 2020 2022 Gubernatorial elections 1876 1878 1880 1882 1884 1886 1888 1890 1894 1896 1898 1900 1902 1904 1906 1908 1910 1912 1914 1916 1918 1920 1922 1924 1926 1928 1930 1932 1934 1936 1938 1940 1942 1944 1946 1948 1950 1952 1954 1956 1958 1962 1966 1970 1974 1978 1982 1986 1990 1994 1998 2002 2006 2010 2014 2018 2022 Attorney General elections 2018 State Senate elections 2013 (recall) 2016 2018 2020 State House elections 2018 2020 2022
Ballot measures 2004 36 2006 38 41 42 43 44 E F G H I J K 2008 46 47 48 49 50 51 52 54 58 59 L 2010 62 2012 64 2018 A 2020 113 114 EE
Aurora Mayoral elections 2011 2019
Colorado Springs Local elections 2019 Mayoral elections 1995 1997 sp 1999 2003 2007 2011 2015 2019
Denver Mayoral elections 2003 2007 2011 2015 2019 2023
El Paso County Local elections 2018
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The following is a list of statewide initiatives and referenda modifying state law and proposing state constitutional amendments in Colorado, sorted by election. The Colorado Legislative Council, an organ of the Colorado General Assembly, maintains a comprehensive list at its website.

Measures submitted to popular vote may be classified as follows:

Referenda are amendments to state statutes or the state constitution proposed by a two-thirds vote of both houses of the Colorado General Assembly and must be approved by a simple majority of voters at the next general election.^[1] Such referred measures are designated by letter.

Initiatives (also referred to simply as Amendments) are amendments to the state statutes or to the state constitution proposed via petition by citizens, and must be signed by a number of registered voters equal to at least 5% of the total number of votes cast for all candidates for the office of secretary of state at the previous general election. Upon acceptance, the initiative is voted upon during the next statewide general election.^[1] Amendments are designated by number. The number assigned to a measure when petitions are circulating is generally different from the number ultimately assigned to an initiative when it is placed upon the ballot.

There is no difference in Colorado, as of July 16, 2008, between the requirements for placing a statutory change, and a state constitutional change on the ballot, or approving such a change. Colorado Referendum O facing voters in November 2008 would change these requirements by requiring more support at the petition stage to amend the state constitution than to amend a state statute.

Colorado voters may also present petitions forcing votes on the repeal of laws enacted by the state legislature without a "safety clause," and may force a public vote on the recall of an elected official. Neither type of ballot issue has been presented to Colorado voters at a statewide level in recent history.

1800s[]

• Colorado state capital referendum, 1881: Denver selected as state capital
• Colorado women's suffrage referendum, 1893: Passed: Women's Right to Vote

1970s[]

• Denver Winter Olympics Referendum, 1972: Passed: Opposed to 1976 Winter Olympics being held in Denver
• Poundstone Amendment, 1974: Passed: Concerning County Annexations

1980s[]

• Gallagher Amendment, 1982: Passed: Concerning Property Taxes

1990s[]

• Amendment 2, 1992: Passed: Disallowing gay, lesbian, or bisexual people from being designated a protected class, overturned in 1996 by Romer v. Evans^[2]

November 2, 2004[]

• Amendment 34: Failed: Construction Liability
• Amendment 35: Passed: Tobacco Tax Increase For Health - Related Purposes
• Amendment 36: Failed: Selection of Presidential Electors
• Amendment 37: Passed: Renewable Energy Requirement
• Referendum A: Failed: State Personnel System
• Referendum B: Passed: Obsolete Constitutional Provisions

November 1, 2005[]

• Referendum C: Passed: State Spending
• Referendum D: Failed: State Borrowing

November 7, 2006[]

• Amendment 38: Failed: Petitions
• Amendment 39: Failed: School District Expenditures for Education
• Amendment 40: Failed: Term Limits on Court of Appeals and Supreme Court Judges
• Amendment 41: Passed: Standards of Conduct in Government
• Amendment 42: Passed: Colorado Minimum Wage Increase
• Amendment 43: Passed: Traditional Marriage
• Amendment 44: Failed: Marijuana Possession
• Amendment 45: Withdrawn By Proponents On August 22, 2006, after a ballot number was assigned: Domestic Partnerships
• Referendum E: Passed: Extension of Property Tax Exemption of Disabled Veterans
• Referendum F: Failed: Removing Recall Timelines from the Constitution
• Referendum G: Passed: Elimination of Obsolete Constitutional Provisions
• Referendum H: Passed: Unauthorized Alien Labor Tax Deduction
• Referendum I: Failed: Domestic Partnerships
• Referendum J: Failed: Public Schools Expenditure Accountability Act
• Referendum K: Passed: Attorney General Initiate Immigration Lawsuit

November 4, 2008[]

This list is up-to-date with the list at the Secretary of State's Elections Center as of 2008-10-03, when four proposed amendments (53, 55, 56 and 57) were withdrawn by their labor supporters in exchange for agreements from businesses and politicians to actively oppose Amendments 47, 49 and 54.[1]. The withdrawn amendments appeared on the ballot, but the votes were not counted.

• Amendment 46: Failed: Discrimination and Preferential Treatment By Governments
• Amendment 47: Failed: Prohibition on Mandatory Labor Union Membership and Dues
• Amendment 48: Failed: Definition Of Person
• Amendment 49: Failed: Allowable Government Paycheck Deductions
• Amendment 50: Passed: Limited Gaming in Central City, Black Hawk, and Cripple Creek
• Amendment 51: Failed: State Sales Tax Increase for Services for People with Developmental Disabilities
• Amendment 52: Failed: Use of Severance Tax Revenue for Highways
• Amendment 53: WITHDRAWN: Criminal Accountability of Business Executives - withdrawn by the sponsors
• Amendment 54: Passed: Campaign Contributions from Certain Government Contractors
• Amendment 55: WITHDRAWN: Allowable Reasons for Employee Discharge or Suspension - withdrawn by the sponsors
• Amendment 56: WITHDRAWN: Employer Responsibility for Health Insurance - withdrawn by the sponsors
• Amendment 57: WITHDRAWN: Additional Remedies for Injured Employees - withdrawn by the sponsors
• Amendment 58: Failed: Severance Taxes on the Oil and Natural Gas Industry
• Amendment 59: Failed: Education Funding and TABOR Rebates
• Referendum L: Failed: Qualifications For Serving In State Legislature
• Referendum M: Passed: Obsolete Constitutional Provisions Relating To Land Value Increases
• Referendum N: Passed: Obsolete Constitutional Provisions Relating To Alcoholic Beverages
• Referendum O: Failed: Citizen-Initiated State Laws

November 2, 2010[]

This list is current as of November 3, 2010 Secretary of State Election Center.

• Amendment 60: Failed: Reduces property taxes and forces the state to pick up the shortfall.
• Amendment 61: Failed: Limits government borrowing.
• Amendment 62: Failed: Definition of Person.
• Amendment 63: Failed: Blocks implementation of PPACA in Colorado.
• Proposition 101: Failed: Lowers state income tax rates and reduces automobile registration fees.
• Proposition 102: Failed: Amends criteria for setting bail and bond in Colorado.

November 6, 2012[]

Source: Secretary of State Election Center, accessed Oct 25, 2012.

• Amendment 64: Passed: Use and Regulation of Marijuana
• : Passed: Colorado Congressional Delegation to Support Campaign Finance Limits
• Amendment S: Passed: State Personnel System

November 3, 2015[]

• Proposition BB Passed: Allows the state to keep revenue from marijuana taxes

November 8, 2016[]

Source: Unofficial Results November 8, 2016 General Election, Colorado Secretary of State.

• Amendment 69 Failed: Colorado Care
• Amendment 70 Passed: Raising the minimum wage to $12 by 2020
• Amendment 71 Passed: Make it harder to put an amendment into the constitution
• Amendment 72 Failed: Increase Cigarette And Tobacco Taxes
• Amendment T Failed: No Exception To Involuntary Servitude Prohibition
• Amendment U Failed: Exempt Certain Possessory Interests From Property Taxes
• Proposition 106 Passed: Access To Medical Aid-In-Dying Medication
• Proposition 107 Passed: Presidential Primary Elections
• Proposition 108 Passed: Unaffiliated Voter Participation In Primary Elections

November 6, 2018[]

https://ballotpedia.org/Colorado_2018_ballot_measures

• Amendment A Passed: Repeals a constitutional exception on the ban of slavery that allowed for slavery and involuntary servitude as punishment for a crime
• Amendment V Failed: Reduces age qualification for legislative members from 25 to 21
• Amendment W Failed: Shortens language on the Colorado ballot regarding judicial retention by consolidating questions
• Amendment X Passed: Changes the definition of industrial hemp from a constitutional definition to a statutory definition
• Amendment Y Passed: Establishes an independent commission for congressional redistricting
• Amendment Z Passed: Establishes an independent commission for state legislative redistricting
• Amendment 73 Failed: Establishes income tax brackets and raises taxes to fund education
• Amendment 74 Failed: Requires that property owners be compensated for any reduction in property value caused by state laws or regulations
• Amendment 75 Failed: Changes campaign finance contribution limits and requirements
• Proposition 109 Failed: Authorizes bonds for transportation projects without raising taxes
• Proposition 110 Failed: Authorizes bonds for transportation projects and raises taxes to repay the debt
• Proposition 111 Passed: Restricts the charges on payday loans to a yearly rate of 36 percent
• Proposition 112 Failed: Mandates minimum setbacks for new oil and gas development projects, including fracking

November 5, 2019[]

Source: https://ballotpedia.org/Colorado_2019_ballot_measures

• Proposition CC Failed: Allows state to retain excess revenue to fund education and transportation
• Proposition DD Passed: Legalization and taxation of sports betting

November 3, 2020[]

Source: https://ballotpedia.org/Colorado_2020_ballot_measures

• Passed: Change the Colorado Constitution from saying "every citizen" to "only a citizen" can vote
• Passed: Remove single bet limits and expand the allowable games in casinos
• Passed: Repeals the Gallagher Amendment of 1982
• Failed: Lowers the requirement for charities to obtain bingo and gambling licenses from having to exist for five years to only three
• Proposition 113 Passed: Make Colorado join the National Popular Vote Interstate Compact
• Proposition 114 Passed: Reintroduce gray wolves on public lands
• Failed: Ban abortion after 22 weeks of pregnancy
• Passed: Decreases the state income tax rate from 4.63% to 4.55%
• Passed: Requires voter approval for new TABOR exempt state enterprises if their revenue is greater than $50 million within its first five years
• Passed: Establish a paid family and medical leave program to provide 12 weeks of paid leave funded through a payroll tax split 50/50 between employers and employees
• Proposition EE Passed: Creates a new nicotine tax and increase tobacco taxes in order to fund education and health care

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