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2026 Colorado Ballot Measures

State

Year

Issue Category

Agriculture and Food

Election Date State Title Outcome
Nov. 6, 2018 Colorado Amendment X: Industrial Hemp Definition Passed

Budget, Spending and Taxes

Election Date State Title Outcome
Nov. 5, 2024 Colorado Proposition JJ: Retain Sports Betting Tax Revenue for Water Projects Measure Passed
Nov. 5, 2024 Colorado Proposition KK: Firearms & Ammunition Excise Tax Passed
Nov. 4, 2025 Colorado : Colorado Tax Deductions and Revenue for School Meals Measure Passed

Civil Liberties and Civil Rights

Election Date State Title Outcome
Nov. 4, 2008 Colorado Amendment 46: Discrimination and Preferential Treatment by the State Failed
Nov. 8, 2016 Colorado Amendment T: No Exception to Involuntary Servitude Prohibition Failed
Nov. 6, 2018 Colorado Amendment A: Prohibit Slavery and Involuntary Servitude in All Circumstances Passed
Nov. 3, 2020 Colorado Amendment 76: Citizenship Qualification of Electors Passed

Constitution

Election Date State Title Outcome
Nov. 4, 2008 Colorado Referendum L: Age Qualification for Serving in General Assembly Failed
Nov. 4, 2008 Colorado Amendment 59: Education Funding and TABOR Rebates Failed
Nov. 4, 2008 Colorado Referendum N: Elimination of Obsolete Constitutional Provisions Regarding Intoxicating Liquor Passed
Nov. 4, 2008 Colorado Amendment 52: Use of Severance Tax Revenue for Highways Failed
Nov. 4, 2008 Colorado Amendment 46: Discrimination and Preferential Treatment by the State Failed
Nov. 4, 2008 Colorado Amendment 56: Employer Responsibility for Health Insurance Failed
Nov. 2, 2010 Colorado Amendment 63: Health Care Choice Failed
Nov. 2, 2010 Colorado Amendment R: Exempt Possessory Interests in Real Property Failed
Nov. 2, 2010 Colorado Amendment 62: Application of the Term Person Failed
Nov. 2, 2010 Colorado Amendment 61: Limits on State and Local Government Borrowing Failed
Nov. 2, 2010 Colorado Amendment P: Regulation of Games of Chance Failed
Nov. 6, 2012 Colorado Amendment S: State Personnel System Passed
Nov. 6, 2012 Colorado Amendment 64: Use and Regulation of Marijuana Passed
Nov. 6, 2012 Colorado Amendment 65: Colorado Congressional Delegation to Support Campaign Finance Limits Passed
Nov. 8, 2016 Colorado Amendment T: No Exception to Involuntary Servitude Prohibition Failed
Nov. 8, 2016 Colorado Amendment U: Exempt Certain Possessory Interests From Property Taxes Failed
Nov. 8, 2016 Colorado Proposed Initiative 98: Primary Elections Passed
Nov. 8, 2016 Colorado Proposed Initiative 101: State Minimum Wage Passed
Nov. 8, 2016 Colorado Proposed Initiative 143: New Cigarette and Tobacco Taxes Failed
Nov. 8, 2016 Colorado Proposed Initiative 96: Requirements for Initiated Constitutional Amendments Passed
Nov. 3, 2020 Colorado Amendment 76: Citizenship Qualification of Electors Passed

Economy and Fiscal

Election Date State Title Outcome
Nov. 4, 2025 Colorado : Colorado Tax Deductions and Revenue for School Meals Measure Passed
Nov. 4, 2025 Colorado : Allow State to Retain Revenue From Proposition FF Measure Passed

Education

Election Date State Title Outcome
Nov. 4, 2008 Colorado Amendment 59: Education Funding and TABOR Rebates Failed
Nov. 5, 2019 Colorado Proposition CC: Retain revenue for education and transportation Failed

Elections

Election Date State Title Outcome
Nov. 4, 2008 Colorado Referendum O: Initiative Petition Requirements Failed
Nov. 4, 2008 Colorado Amendment 54: Campaign Contributions from Certain Government Contractors Passed
Nov. 6, 2012 Colorado Amendment 65: Colorado Congressional Delegation to Support Campaign Finance Limits Passed
Nov. 8, 2016 Colorado Proposed Initiative 98: Primary Elections Passed
Nov. 8, 2016 Colorado Proposed Initiative 140: Presidential Primary Election Passed
Nov. 8, 2016 Colorado Proposed Initiative 96: Requirements for Initiated Constitutional Amendments Passed
Nov. 6, 2018 Colorado Ammendment V: Lower Age Requirement for Members of the State Legislature Failed
Nov. 6, 2018 Colorado Amendment W: Election Ballot Format for Judicial Retention Elections Passed
Nov. 6, 2018 Colorado Amendment Y: Congressional Redistricting Passed
Nov. 6, 2018 Colorado Amendment Z: Legislative Redistricting Passed
Nov. 6, 2018 Colorado Amendment 75: Campaign Contributions Failed
Nov. 3, 2020 Colorado Proposition 113: Adopt Agreement to Elect U.S. President By National Popular Vote Passed
Nov. 3, 2020 Colorado Amendment 76: Citizenship Qualification of Electors Passed
Nov. 3, 2020 Colorado Proposition 117: Voter Approval for Certain New State Enterprises Passed
Nov. 8, 2022 Colorado SB22-222 Proposition GG: Colorado Include Income Tax Effects in Initiative Ballot Language Measure Passed
Nov. 5, 2024 Colorado Amendment K: Modify Constitutional Election Deadlines Failed
Nov. 5, 2024 Colorado Proposition 131: Concerning the Conduct of Elections Failed

Employment and Affirmative Action

Election Date State Title Outcome
Nov. 4, 2008 Colorado Amendment 46: Discrimination and Preferential Treatment by the State Failed
Nov. 4, 2008 Colorado Amendment 56: Employer Responsibility for Health Insurance Failed
Nov. 4, 2008 Colorado Amendment 57: Additional Remedies for Injured Employees Failed
Nov. 4, 2008 Colorado Amendment 55: Allowable Reasons for Employee Discharge or Suspension Failed
Nov. 3, 2020 Colorado Proposition 118: Paid Family and Medical Leave Insurance Program Passed

Energy

Election Date State Title Outcome
Nov. 4, 2008 Colorado Amendment 58: Severance Taxes on the Oil and Natural Gas Industry Failed

Entitlements and the Safety Net

Election Date State Title Outcome
Nov. 8, 2016 Colorado Proposed Initiative 101: State Minimum Wage Passed

Environment

Election Date State Title Outcome
Nov. 4, 2008 Colorado Amendment 58: Severance Taxes on the Oil and Natural Gas Industry Failed
Nov. 5, 2024 Colorado Proposition 127: Prohibit Hunting of Mountain Lion, Bobcat, and Lynx Failed

Executive Branch

Election Date State Title Outcome
Nov. 3, 2020 Colorado Proposition 113: Adopt Agreement to Elect U.S. President By National Popular Vote Passed

Federal, State and Local Relations

Election Date State Title Outcome
Nov. 2, 2010 Colorado Amendment 63: Health Care Choice Failed
Nov. 3, 2026 Colorado Initiative 95: Notification of U.S. Department of Homeland Security for Certain Criminal Charges and Immigration Status Initiative Pending

Finance and Banking

Election Date State Title Outcome
Nov. 6, 2018 Colorado Proposition 111: Limitations on Payday Loans Passed

Government Operations

Election Date State Title Outcome
Nov. 4, 2008 Colorado Amendment 49: Allowable Government Paycheck Deductions Failed
Nov. 2, 2010 Colorado Amendment Q: Temporary Location for the State Seat of Government Passed
Nov. 6, 2012 Colorado Amendment S: State Personnel System Passed

Guns

Election Date State Title Outcome
Nov. 5, 2024 Colorado Proposition KK: Firearms & Ammunition Excise Tax Passed

Health Insurance

Election Date State Title Outcome
Nov. 8, 2016 Colorado Proposed Initiative 20: State Health Care System Failed
Nov. 3, 2020 Colorado Proposition 118: Paid Family and Medical Leave Insurance Program Passed

Health and Health Care

Election Date State Title Outcome
Nov. 4, 2008 Colorado Amendment 51: State Sales Tax Increase for Services for People with Developmental Disabilities Failed
Nov. 4, 2008 Colorado Amendment 56: Employer Responsibility for Health Insurance Failed
Nov. 2, 2010 Colorado Amendment 63: Health Care Choice Failed
Nov. 8, 2016 Colorado Proposed Initiative 106: Medical Aid in Dying Passed
Nov. 3, 2020 Colorado Proposition EE: Taxes on Nicotine Products Passed
Nov. 5, 2024 Colorado Amendment 79: Right to Abortion and Health Insurance Coverage Initiative Passed

Higher Education

Election Date State Title Outcome
Nov. 4, 2008 Colorado Amendment 58: Severance Taxes on the Oil and Natural Gas Industry Failed
Nov. 4, 2008 Colorado Amendment 46: Discrimination and Preferential Treatment by the State Failed
Nov. 1, 2011 Colorado Proposition 103: Temporary Tax Increase for Public Education Failed

Infrastructure

Election Date State Title Outcome
Nov. 6, 2018 Colorado Proposition 109: Authorize Bonds for Highway Projects Failed

K-12 Education

Election Date State Title Outcome
Nov. 4, 2008 Colorado Amendment 59: Education Funding and TABOR Rebates Failed
Nov. 4, 2008 Colorado Amendment 50: Limited Gaming in Central City, Black Hawk and Cripple Creek Passed
Nov. 1, 2011 Colorado Proposition 103: Temporary Tax Increase for Public Education Failed
Nov. 5, 2013 Colorado Amendment 66: Funding for Public Schools Failed
Nov. 5, 2013 Colorado Proposition AA: Colorado Marijuana Excise Tax and Sales Tax Passed
Nov. 4, 2014 Colorado Proposition 104: A Change to the Colorado Revised Statutes Requiring Any Meeting of a Board of Education, or Any Meeting Between Any Representative of a School District and Any Representative of Employees, at Which a Collective Bargaining Agreement is Discussed to be Open to the Public Passed
Nov. 4, 2014 Colorado Amendment 68: Shall State Taxes be Increased $114,500,000 Annually in the First Full Fiscal Year, and by Such Amounts that are Raised Thereafter, by Imposing a New Tax on Authorized Horse Racetracks' Adjusted Gross Proceeds from Limited Gaming to Increase Statewide Funding for K-12 Education, and, in Connection T Failed
Nov. 6, 2018 Colorado Amendment 73: Funding for Public Schools Failed
Nov. 2, 2021 Colorado PROPOSITION 119 (STATUTORY): Learning Enriching and Academic Progress Program Failed
Nov. 5, 2024 Colorado Amendment 80: Constitutional Right to School Choice Initiative Failed
Nov. 4, 2025 Colorado : Allow State to Retain Revenue From Proposition FF Measure Passed
Nov. 3, 2026 Colorado Initiative 109: Sex Requirement for School and College Sports Initiative Pending
Nov. 3, 2026 Colorado Senate Bill 26-135: TABOR Revenue Cap Increase for K-12 Education Measure Pending

Legal

Election Date State Title Outcome
Nov. 2, 2010 Colorado Proposition 102: Criteria for Release to Pretrial Services Programs Failed

Legislative Branch

Election Date State Title Outcome
Nov. 4, 2008 Colorado Referendum L: Age Qualification for Serving in General Assembly Failed
Nov. 2, 2010 Colorado Amendment Q: Temporary Location for the State Seat of Government Passed
Nov. 6, 2018 Colorado Ammendment V: Lower Age Requirement for Members of the State Legislature Failed
Nov. 6, 2018 Colorado Amendment Y: Congressional Redistricting Passed
Nov. 6, 2018 Colorado Amendment Z: Legislative Redistricting Passed
Nov. 3, 2020 Colorado Proposition 117: Voter Approval for Certain New State Enterprises Passed

Marijuana

Election Date State Title Outcome
Nov. 6, 2012 Colorado Amendment 64: Use and Regulation of Marijuana Passed
Nov. 5, 2013 Colorado Proposition AA: Colorado Marijuana Excise Tax and Sales Tax Passed
Nov. 3, 2015 Colorado Proposition BB: Retain Revenue in Excess of Blue Book Estimate Passed

Marriage

Election Date State Title Outcome
Nov. 5, 2024 Colorado Amendment J: Constitutional Same-Sex Marriage Ban Amendment Passed

Natural Resources

Election Date State Title Outcome
Nov. 4, 2008 Colorado Amendment 52: Use of Severance Tax Revenue for Highways Failed

Oil and Gas

Election Date State Title Outcome
Nov. 4, 2008 Colorado Amendment 58: Severance Taxes on the Oil and Natural Gas Industry Failed
Nov. 6, 2018 Colorado Proposition 112: Increased Setback Requirement for Oil and Natural Gas Development Failed

Sexual Orientation and Gender Identity

Election Date State Title Outcome
Nov. 4, 2008 Colorado Amendment 46: Discrimination and Preferential Treatment by the State Failed
Nov. 3, 2026 Colorado Initiative 110: Prohibit Surgeries for Treatment in Response to Minors' Perception of Sex or Gender Measure Pending
Nov. 3, 2026 Colorado Initiative 109: Sex Requirement for School and College Sports Initiative Pending

Taxes

Election Date State Title Outcome
Nov. 4, 2008 Colorado Amendment 59: Education Funding and TABOR Rebates Failed
Nov. 4, 2008 Colorado Referendum M: Elimination of Obsolete Constitutional Provisions Regarding Land Value Increase Passed
Nov. 4, 2008 Colorado Amendment 58: Severance Taxes on the Oil and Natural Gas Industry Failed
Nov. 4, 2008 Colorado Amendment 51: State Sales Tax Increase for Services for People with Developmental Disabilities Failed
Nov. 2, 2010 Colorado Amendment R: Exempt Possessory Interests in Real Property Failed
Nov. 2, 2010 Colorado Amendment 60: Property Taxes Failed
Nov. 1, 2011 Colorado Proposition 103: Temporary Tax Increase for Public Education Failed
Nov. 5, 2013 Colorado Proposition AA: Colorado Marijuana Excise Tax and Sales Tax Passed
Nov. 4, 2014 Colorado Amendment 68: Shall State Taxes be Increased $114,500,000 Annually in the First Full Fiscal Year, and by Such Amounts that are Raised Thereafter, by Imposing a New Tax on Authorized Horse Racetracks' Adjusted Gross Proceeds from Limited Gaming to Increase Statewide Funding for K-12 Education, and, in Connection T Failed
Nov. 8, 2016 Colorado Amendment U: Exempt Certain Possessory Interests From Property Taxes Failed
Nov. 8, 2016 Colorado Proposed Initiative 143: New Cigarette and Tobacco Taxes Failed
Nov. 8, 2016 Colorado Proposed Initiative 20: State Health Care System Failed
Nov. 6, 2018 Colorado Amendment 73: Funding for Public Schools Failed
Nov. 6, 2018 Colorado Proposition 110: Authorize Sales Tax and Bonds for Transportation Projects Failed
Nov. 5, 2019 Colorado Proposition DD: Authorize and tax sports betting Passed
Nov. 3, 2020 Colorado Amendment B: Repeal Gallagher Amendment Passed
Nov. 3, 2020 Colorado Proposition EE: Taxes on Nicotine Products Passed
Nov. 3, 2020 Colorado Proposition 116: State Income Tax Rate Reduction Passed
Nov. 2, 2021 Colorado PROPOSITION 120: Property Tax Assessment Rate Reduction and Voter-Approved Revenue Change Failed
Nov. 8, 2022 Colorado HCR1003 - Amendment E: Colorado Homestead Exemption to Surviving Spouses of U.S. Armed Forces Members and Veterans Amendment Passed
Nov. 8, 2022 Colorado Initiative - Proposition 121: State Income Tax Rate Reduction Passed
Nov. 8, 2022 Colorado HB22-1414 Proposition FF: Colorado Reduce Income Tax Deduction Amounts to Fund School Meals Program Measure Passed
Nov. 8, 2022 Colorado SB22-222 Proposition GG: Colorado Include Income Tax Effects in Initiative Ballot Language Measure Passed
Nov. 7, 2023 Colorado Proposition EE: Tobacco and Nicotine Product Tax Revenue Measure Passed
Nov. 5, 2024 Colorado Amendment G: Colorado Property Tax Exemption for Veterans with Individual Unemployability Status Amendment Passed
Nov. 3, 2026 Colorado : Require Vehicle-Related and Fuel Tax Revenue to Be Used for Road Transportation Initiative Pending

Technology and Communication

Election Date State Title Outcome
Nov. 2, 2010 Colorado Proposition 101: Income, Vehicle, and Telecommunication Taxes and Fees Failed

Women

Election Date State Title Outcome
Nov. 4, 2008 Colorado Amendment 46: Discrimination and Preferential Treatment by the State Failed
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