Colorado voters will decide next month whether people convicted of trafficking a minor for sexual servitude should face mandatory life in prison without parole, a punishment currently reserved for first-degree murder. Proposition 133 would reclassify the crime from a Class 2 felony to a Class 1 felony and eliminate judges' discretion to impose any other sentence. If it passes, Colorado would become the seventh state in the country to require life without parole for this specific offense, following Arizona, Nevada, Louisiana, Iowa, Alabama and Florida, according to Complete Colorado.
The measure, backed by sponsor Protect Kids Colorado, reached the ballot after the group submitted nearly 170,000 signatures earlier this year, per the same outlet. As CBS Colorado reported, state legislative analysts released a study in August examining child sex trafficking statutes in all 50 states, finding that 23 states allow sentences up to life in prison while six mandate life without parole outright. Proposition 133 would also broaden the legal definition of the crime to include knowingly exchanging money or anything of value to buy or sell sexual activity with a minor, Complete Colorado reports.
What Current Law Allows — And a Conflict in the Numbers
Accounts of the existing penalty range differ. The Denver Post reports that child sex trafficking currently carries between eight and 48 years in prison followed by five years of mandatory parole, while The Denver Post is the source for that figure. Complete Colorado, however, states the crime currently carries 16 to 48 years with the possibility of parole. CBS Colorado reports that judges can already impose longer sentences when the offense is classified as a crime of violence, when the defendant caused serious bodily injury, or when a deadly weapon was used.
Proposition 133 would take effect January 1 and would not apply retroactively to people arrested before then, according to Complete Colorado. Because it changes state statute rather than the state constitution, it needs only a simple majority of Colorado voters to pass, as Colorado Newsline notes. CBS Colorado also reports that an identical bill was killed by Democrats in the state legislature earlier this year. Protect Kids Colorado had already begun pursuing the ballot initiative in 2025.
Supporters Point to Deterrence and Trafficking Numbers
Proponents argue that tougher penalties could discourage would-be traffickers, a position Colorado Politics attributes to the measure's backers. They point to troubling trend lines: a Common Sense Institute study found Colorado had the 15th-highest human trafficking rate among all states in 2024, with children making up an average of 64% of trafficking victims. The same research found Colorado reported 60 human-trafficking victims aged 0 to 19 in 2025, the third-highest single-year count on record, according to Common Sense Institute.
Comparisons to other states show a patchwork of approaches. Kansas, for instance, mandates life sentences only when the victim is younger than 14, allowing variable sentences otherwise, per the Common Sense Institute's research. Of the states bordering Colorado, the evidence identifies only Arizona as having a mandatory life-without-parole law for this offense.
Opponents Warn Coerced Victims Could Face Life Sentences
The Colorado Coalition Against Sexual Assault opposes Proposition 133, warning that the mandatory sentencing structure could create serious unintended consequences. The group says many trafficking victims are themselves forced to recruit other children, and worries those victims could end up facing the same sentence as the traffickers who coerced them, according to Colorado Politics. Colorado law currently allows people accused of trafficking to claim coercion as a defense, as The Colorado Sun reports — but opponents say Proposition 133 would remove judges' discretion to weigh that defense in sentencing, meaning a victim unable to prove coercion could still face life without parole.
The Colorado Sun also reports that the sentence under Proposition 133 would mirror the punishment required for first-degree murder convictions. Fiscal estimates of the measure's cost diverge sharply depending on the source. The Colorado Sun cites nonpartisan fiscal analysts projecting an extra $180,000 in prison spending starting in 2041, rising to $540,000 in 2043 before leveling off, while Complete Colorado separately reports an estimate that the measure would raise Department of Corrections costs by about $50,000 per year.
What Happens After the Vote
Because Proposition 133 would be enacted as statute rather than a constitutional amendment, the Colorado Legislature retains the power to change or repeal it after it takes effect, per CBS Colorado's reporting. Between 2022 and 2024, roughly 30 cases involving child sex trafficking were filed in Colorado courts, according to a citation attributed to Colorado Legislative Council Staff — though that figure carries lower confidence than other data in the record. Voters will make the final call on Proposition 133 when they cast ballots in next month's general election.
