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Colorado · November 3, 2026 general election · Statewide ballot measure

Proposition 134: what your vote means

Male and female participation in school and collegiate sports. On every Colorado ballot. Official sources checked October 22, 2026.

Proposition 134 · Citizen-initiated statute (majority vote)

Male and female participation in school and collegiate sports

Official ballot title (quoted exactly)

Shall there be a change to the Colorado Revised Statutes creating new law restricting participation in all K-12 and collegiate school sports based on the participant’s sex as determined by certain aspects of their biological reproductive system, and, in connection therewith, requiring a school, institution of higher education, or athletic association to designate each school or intramural athletic team or sport as male, female, or coeducational; only allowing participants to compete on the team or sport of their designated sex or to compete on a coeducational team; creating an exception to allow a female to participate on a male-designated team or sport if there is no female team available; prohibiting a government entity, licensing or accrediting organization, or athletic association from entertaining a complaint, opening an investigation, or taking other adverse action against a school for maintaining separate teams or sports for females; and providing the commissioner of education with the authority to enforce the proposed initiative for K-12 school districts?

Ballot title as printed in the 2026 State Ballot Information Booklet (Blue Book), Colorado Legislative Council Staff.

A YES vote means:

All K-12 and college school sports teams would have to be designated male, female, or coeducational based on biological sex, and schools and school districts would have to adopt policies on sex eligibility for sports; female athletes could play on a male team when no female team is available.

A NO vote means:

Schools, districts, and athletic associations could continue to set their own eligibility policies in line with current state and federal law.

What it would change

  • Who is affected: K-12 and college athletes, schools, colleges, and athletic associations.
  • Exception: female athletes could play on a male team when no female team is available.
  • Taxes and fees: none.
  • Fiscal impact (Legislative Council Staff): indeterminate state workload and legal costs if enforcement is needed; minimal local costs to update policies.

Official arguments, summarized

Short neutral summaries of the arguments printed in the official voters’ pamphlet. The committees that wrote them are responsible for their content. Read the full text at the link below.

Argument for

Supporters say female athletes should compete against other females for wins, records, and scholarships, that one statewide standard creates consistency, and that sex-based rules address safety and privacy.

Argument against

Opponents say it could subject many athletes to intrusive checks of their sex, that without a clear method schools would adopt uneven policies, and that excluding transgender students from teams with their peers harms them.

Arguments for and against Proposition 134, 2026 Blue Book, Colorado Legislative Council Staff (PDF, p. 57)

Who supports it and who opposes it

These lists come from official campaign filings (registered committees) and public endorsements, each linked to its source. They are not complete, and SaveYourState does not endorse anyone listed. Lists checked October 30, 2026.

Who supports it

Who opposes it

Official sources

SaveYourState is independent and nonpartisan, not a government site, and does not take positions on ballot measures. This explainer describes effects only, using the official ballot title, explanatory statement, full text, and fiscal impact statement. If anything here differs from those documents, the official documents control.