Statewide measures
Every Colorado voter decides these 14. Each page starts in plain words, with a before-and-after table and an example, then why people want it and why others object, who is paying for each side, and the official wording and Blue Book analysis.
- Amendment 81 Law Enforcement Communication with Federal Immigration Authorities55% to pass
Biggest change: Officers, jailers and prosecutors would have to notify the federal Department of Homeland Security within 72 hours of charging certain people whose legal status they cannot confirm.
- Amendment 82 Constitutional Right to Purchase and Sell Natural Gas55% to pass
Biggest change: Buying and selling natural gas for homes and businesses would become a right in the state constitution.
- Amendment 83 Constitutional Right to Hunt and Fish55% to pass
Biggest change: Hunting and fishing would become a right in the state constitution and the preferred way to manage wildlife.
- Amendment 84 Mail Ballot Voter Identification55% to pass
Biggest change: Mail voters would have to add the last four digits of an accepted ID number to their ballot, on top of their signature.
- Amendment 85 Plain Language Ballot Titles55% to pass
Biggest change: Laws that require set wording in citizen initiative titles, such as wording about tax changes, could be blocked if they get in the way of plain language.
- Amendment 86 Requirements for Off‑Cycle Congressional Redistricting55% to pass
Biggest change: Any change to Colorado's U.S.
- Amendment 87 Graduated Income Taxmajority to pass
Biggest change: The single 4.4 percent income tax rate is replaced by six rates, from 3.7 percent to 8.4 percent.
- Proposition NN Keep and Spend Money for Education and Other Purposesmajority to pass
Biggest change: TABOR refunds would end for budget years 2026-27 and 2027-28, according to the Blue Book's estimates.
- Proposition 132 Increase Penalties for Fentanyl Crimesmajority to pass
Biggest change: Anyone convicted of selling, giving, or sharing any amount of fentanyl must go to prison for 8 to 32 years.
- Proposition 133 Penalties for Human Trafficking of a Minormajority to pass
Biggest change: Every conviction for child sex trafficking would bring life in prison without parole.
- Proposition 134 Male and Female Participation in School and Collegiate Sportsmajority to pass
Biggest change: Students would have to play on teams that match their biological sex, or on a team open to all.
- Proposition 135 Prohibit Surgery on Minors in Response to Perception of Sex or Gendermajority to pass
Biggest change: Surgery on people under 18 to change sex traits because of how they see their sex or gender would be banned, and no insurance or government money could pay for it.
- Proposition 136 Income Tax Rate Limitmajority to pass
Biggest change: If both this measure and Amendment 87 pass, they conflict: Amendment 87's rate for incomes over $500,000 would be above the 4.4 percent limit.
- Proposition 137 Direct Sporting Goods Sales Tax Revenue for Conservationmajority to pass
Biggest change: About $175 million a year of sales tax already collected on sporting goods would go to conservation, wildfire and outdoor programs instead of the general budget, and would not count under the TABOR cap.
Only in the Front Range rail district
Constitutional amendments need 55% of the vote, except Amendment 87, which the Blue Book lists as passing with a majority. Statutory propositions need a majority.