Colorado Proposition 135 (2026), explained

This was on the Colorado ballot on Tuesday, November 3, 2026. No recommendation, just what it does and both sides.

Passed, 52% yes (projected)Votes are still being counted, as of Monday, November 9, 2026, per Colorado Politics.

Proposition 135State law · Citizen initiative

Ban certain surgeries for minors

Explain it like I'm 5

This would stop certain surgeries meant to change a minor's sex characteristics because of the minor's gender identity. It does not ban counseling or every kind of gender-related care.

Yes vote

Health professionals may not perform the covered surgeries on people under 18, and public funds or insurance may not pay for them.

No vote

No new statewide ban takes effect, leaving these decisions to families and medical professionals under current law.

The question to ask yourself

Should the state set a blanket age limit for these surgeries, or should families and medical professionals decide case by case?

The case for

  • Supporters say minors may not be ready for permanent, irreversible decisions.
  • The measure would establish one age rule instead of leaving the decision entirely to individual providers.
  • It does not prohibit counseling or social transition.

Backed by: Protect Kids Colorado, Republican Party of Colorado, Focus on the Family, Colorado Catholic Conference

The case against

  • Families, patients, and doctors would lose the ability to make individualized decisions.
  • A statewide ban replaces medical judgment with a blanket legal rule.
  • The surgeries are already rare, so the measure may restrict care without addressing a widespread practice.

Opposed by: Families Not Politics, Colorado Medical Society, Colorado chapter of the American Academy of Pediatrics, Colorado Psychiatric Society, ACLU of Colorado

Money
No significant direct state cost or savings is estimated; possible administrative or legal costs are not estimated.
Don't be misled
It is misleading to say the measure bans all gender-related care for minors, because it addresses specified surgeries and related payment, not counseling or every nonsurgical treatment.

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Written by ChatGPT, Claude, Gemini and Grok with web search, then checked against each other. See where they disagreed on Colorado. Your sample ballot and the official voter guide are the final word. Look up your sample ballot.

Also on the Colorado ballot

  1. Amendment 81Police immigration notices
  2. Amendment 82Natural gas access right
  3. Amendment 83Right to hunt and fish
  4. Amendment 84ID number on mail ballots
  5. Amendment 85Plain-language ballot questions
  6. Amendment 86Mid-decade map approval rules
  7. Amendment 87Graduated state income tax
  8. Proposition 132Tougher fentanyl crime penalties
  9. Proposition 133Life without parole for child trafficking
  10. Proposition 134School sports by biological sex
  11. Proposition 136Cap income tax at 4.4 percent
  12. Proposition 137Sporting-goods tax for conservation
  13. Proposition NNKeep TABOR surplus for schools