Conservative speaker and radio talk show host Jeff Hunt says Proposition 134 preserves fairness in female athletics.
"It requires that girls that are participating in girls' sports be girls and boys participating in boys' sports be boys," Hunt summarizes.
The measure would apply to students in public and private K-12 schools and colleges, including those participating in intramural and interscholastic sports, but not athletes participating in independent youth sports clubs and private leagues.
"If there's a co-ed league, that's fine," Hunt adds. "There's nothing stopping that from taking place."
Opponents argue that Proposition 134 targets so-called transgender students and creates unnecessary verification burdens for schools and families.
According to the Colorado General Assembly, the measure would create additional administrative and legal costs for the state, particularly if schools fail to comply and the Colorado Department of Education must intervene. Schools and universities would also incur costs to update athletic policies, though most local expenses are expected to be minimal.
Supporters emphasize that a "yes" vote is straightforward for voters seeking to restrict female-designated teams to females.
According to a University of Colorado Boulder/YouGov poll conducted in October, 55% support the initiative and 34% oppose it.
"It's a yes vote to protect the sanctity of women's sports," Hunt submits. "It's a yes vote to make sure that women's spaces like locker rooms and dorms are protected and safe and private for young women."
Neither the state nor any athletic organization tracks the number of transgender students participating in school sports. The number of athletes the measure would affect is unknown. Proponents of biological males in women's sports point to low numbers, but the website Hecheated.org, which tracks males in female sports, currently lists 525 cases across the country, average of more than 10 instances per state.
Over the past several years, Colorado has adopted some of the nation's more expansive legal protections for transgender individuals, including antidiscrimination protections in education and requirements that certain health insurance plans cover so-called "gender-affirming care."
While Democratic lawmakers enacted additional protections for gender-transition-related healthcare in 2025, the state has also faced growing resistance, including school districts challenging transgender-inclusive athletic policies.
With conservative groups rallying turnout around statewide initiatives, Hunt emphasizes the importance of conservative voter participation in ballot measures.
"There are real good opportunities to adjust the direction of the state in a more conservative, more family-friendly direction by being active on those ballot initiatives," he says.
