Kim MonsonKim Monson · Colorado Voter's Guide 2026
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Proposition
135
Initiative 110
On the November 2026 ballot

Proposition 135 (Initiative 110): prohibiting surgery on minors to alter biological sex characteristics

Proposition 135 would prohibit knowingly providing surgery to someone under 18 in response to the minor’s perception of sex or gender. It would also prohibit state or federal funds, Medicaid reimbursements and insurance coverage from paying for that surgery. The definition excludes treatment for people born with a medically verifiable disorder of sex development, treatment for acquired physical or chemical abnormalities, and male circumcision.
Kim's recommendation
YES
Kim's recommendation
YES
Vote Yes Concerning prohibiting surgery for minors for the purpose of altering the minor’s biological sex characteristic and prohibiting state and federal funding for such surgeries.
Kim's Reasoning:

It is Nature’s law that boys are boys and can never be girls, and girls are girls and can never be boys. Surgery that cuts off healthy breasts of adolescent girls and penises of boys is cruel and unusual. Using taxpayer’s money to fund these surgeries, whether state or federal funds, medicaid reimbursements, or insurance coverage contributes to the national debt, Colorado’s significant budget shortfall, and increased insurance premiums for all Coloradans. Societies that do not protect their children from harm are decaying societies and will no longer thrive and prosper. VOTE YES CONCERNING PROHIBITING SURGERY FOR MINORS FOR THE PURPOSE OF ALTERING THE MINOR’S BIOLOGICAL SEX CHARACTERISTIC AND PROHIBITING STATE AND FEDERAL FUNDING FOR SUCH SURGERIES.

Kim Monson
Kim Monson
Host, The Kim Monson Show · President, Colorado Union of Taxpayers · Colorado Voter's Guide 2026
Certified ballot question
Certified ballot title

Shall there be a change to the Colorado Revised Statutes modifying existing law by prohibiting surgery on a minor for the purpose of altering the minor’s biological sex characteristics, and, in connection therewith, prohibiting any health-care professional or other person from knowingly performing, prescribing, administering, or providing any surgery to a minor for the purpose of altering the minor’s biological sex characteristics and prohibiting the use of state or federal funds, Medicaid reimbursement, or insurance coverage to pay for this type of surgery?

A yes vote means

A health-care professional or other person cannot knowingly perform, prescribe, administer or provide surgery to someone under 18 in response to the minor’s perception of sex or gender. State or federal funds, Medicaid reimbursements and insurance coverage cannot pay for the prohibited surgery. The definition excludes treatment for people born with a medically verifiable disorder of sex development, treatment for acquired physical or chemical abnormalities, and male circumcision. The measure applies to violations on or after January 1, 2027.

A no vote means

Current law remains in effect.

Key facts
Takes effect
January 1, 2027
Applies to violations on or after that date.
Added state appropriations
$0 estimated
September 9, 2025 estimate for fiscal years 2026–27 and 2027–28; assumes compliance. The note also describes possible small savings and fee revenue.
Age covered
Under 18
The measure’s definition excludes three kinds of treatment.
Sunset

The measure would take effect on January 1, 2027, and apply to violations on or after that date. It has no expiration date.

TABOR treatment

The measure sets no tax, rate or fee. Table 1 of the September 9, 2025 fiscal impact statement shows no change in TABOR refunds in FY 2026-27 or FY 2027-28. The July 28, 2025 fiscal summary had said that added Department of Regulatory Agencies fees and Judicial Department filing fees would be revenue subject to TABOR; the September 9 statement is the full fiscal impact statement for the measure, and it estimates no revenue change.

Cost signal

Table 1 of the fiscal impact statement shows $0 in state revenue, $0 in state expenditures, $0 in transferred funds, no change in TABOR refunds and no change in state staffing in FY 2026-27 and FY 2027-28.

The measure01

Proposition 135 would prohibit surgery on a minor to alter biological sex characteristics

Proposition 135 would add section 12-30-125 to the Colorado Revised Statutes. The section carries the short title "PROTECT CHILDREN FROM IRREVERSIBLE SEX CHANGE SURGERY ACT". Its operative sentence reads: "A HEALTH-CARE PROFESSIONAL OR OTHER PERSON SHALL NOT KNOWINGLY PERFORM, PRESCRIBE, ADMINISTER, OR PROVIDE ANY SURGERY TO A MINOR FOR THE PURPOSE OF ALTERING BIOLOGICAL SEX CHARACTERISTICS." A minor is "AN INDIVIDUAL WHO IS UNDER EIGHTEEN YEARS OF AGE". The fiscal note says "this measure takes effect on January 1, 2027", and the measure applies to violations occurring on or after that date. A no vote leaves current law unchanged.

Michele Austin and Erin Lee are the designated representatives for Proposition 135, which qualified by petition.

The measure would add section 12-30-125, a number already used by House Bill 25-1087. Legislative reviewers asked the proponents to use section 12-30-126 instead, but the final text retains 12-30-125. The reviewers also asked about the measure’s single subject and the meaning of “altering biological sex characteristics”; the final text defines that phrase.

Who placed it on the ballot

Proposition 135 qualified for the ballot through the petition process. The review and comment memorandum of July 11, 2025, from Legislative Council Staff and the Office of Legislative Legal Services, is addressed to Michele Austin and Erin Lee as the measure's designated representatives. The memorandum names Austin and Lee.

The designated representatives of Proposition 135

Michele Austin and Erin Lee are the designated representatives for Proposition 135 (Initiative 110) and Proposition 134 (Initiative 109). Both measures qualified by petition.

Review and comment memorandum, July 11, 2025.
The prohibition covers surgery

The operative sentence reads: “A HEALTH-CARE PROFESSIONAL OR OTHER PERSON SHALL NOT KNOWINGLY PERFORM, PRESCRIBE, ADMINISTER, OR PROVIDE ANY SURGERY TO A MINOR FOR THE PURPOSE OF ALTERING BIOLOGICAL SEX CHARACTERISTICS.” Treatment that is not surgery, including puberty blockers and cross-sex hormones, falls outside it. Two other places in the measure are written more broadly. The headnote over the subsection reads “(3) Prohibition on medical interventions on minors.”, and the legislative declaration says “The same protections should apply to irreversible medical interventions related to biological sex.”

Text of Initiative 110, section 12-30-125 (3) and its headnote, and section 1 (1)(d).
The section number the measure adds was already in use

On July 11, 2025 Legislative Council Staff and the Office of Legislative Legal Services told the designated representatives: “House Bill 25-1087 added a new section 12-30-125 to the Colorado Revised Statutes. The proponents should renumber the amending clause in section 2 of the proposed initiative to reflect adding a new section 12-30-126.” The certified text keeps the original number: its amending clause adds section 12-30-125.

Review and comment memorandum, July 11, 2025, substantive comment 2; text of Initiative 110, section 2.
The figures and the dates
Takes effectJanuary 1, 2027, for violations occurring on or after that dateText of Initiative 110, section 3; fiscal impact statement, September 9, 2025
Petition filedFebruary 20, 2026Colorado Secretary of State initiative status page
Statement of sufficiencyMarch 17, 2026Colorado Secretary of State initiative status page
Designated representativesMichele Austin and Erin LeeReview and comment memorandum, July 11, 2025
State revenue$0 in FY 2026-27 and $0 in FY 2027-28Fiscal impact statement, Table 1
State expenditures$0 in FY 2026-27 and $0 in FY 2027-28Fiscal impact statement, Table 1
Transferred funds$0 in FY 2026-27 and $0 in FY 2027-28Fiscal impact statement, Table 1
Change in TABOR refunds$0 in FY 2026-27 and $0 in FY 2027-28Fiscal impact statement, Table 1
Change in state staffing0.0 FTE in FY 2026-27 and 0.0 FTE in FY 2027-28Fiscal impact statement, Table 1
Medicaid savingsExpected to be minimalFiscal impact statement, State Expenditures
State employee health plan savingsExpected to be minimalFiscal impact statement, State Expenditures
Federal funding ruleScheduled for October 13, 2026. CMS’s August 2026 rule restricts federal Medicaid funding for specified procedures under age 18 and CHIP funding under age 19.Federal Register, August 13, 2026.
Contents of section 12-30-125A short title, definitions, the prohibition, the payment bar and a severability clause.Text of Initiative 110, section 12-30-125
EnforcementComplaints to the Department of Regulatory Agencies and civil cases in the Judicial DepartmentFiscal summary, July 28, 2025; fiscal impact statement, September 9, 2025
Figures from the Legislative Council Staff fiscal impact statement of September 9, 2025, except where another source is named on the line.
“A HEALTH-CARE PROFESSIONAL OR OTHER PERSON SHALL NOT KNOWINGLY PERFORM, PRESCRIBE, ADMINISTER, OR PROVIDE ANY SURGERY TO A MINOR FOR THE PURPOSE OF ALTERING BIOLOGICAL SEX CHARACTERISTICS.”
Proposition 135, section 12-30-125 (3)
Prohibited surgery, exclusions and payment restrictions
The prohibition“A HEALTH-CARE PROFESSIONAL OR OTHER PERSON SHALL NOT KNOWINGLY PERFORM, PRESCRIBE, ADMINISTER, OR PROVIDE ANY SURGERY TO A MINOR FOR THE PURPOSE OF ALTERING BIOLOGICAL SEX CHARACTERISTICS.”
Persons boundA health-care professional or other person. The measure defines a health-care professional as any person licensed in Colorado or another state “TO PRACTICE MEDICINE, CHIROPRACTIC, NURSING, PHYSICAL THERAPY, PODIATRY, DENTISTRY, PHARMACY, OPTOMETRY, PSYCHIATRY, PSYCHOLOGY, MENTAL HEALTH THERAPY, OR OTHER HEALING ARTS”, and includes any professional corporation or other professional entity made up of such providers.
Excluded treatments“IT DOES NOT INCLUDE TREATMENT FOR PERSONS BORN WITH A MEDICALLY VERIFIABLE DISORDER OF SEX DEVELOPMENT OR TREATMENT FOR ACQUIRED PHYSICAL OR CHEMICAL ABNORMALITIES.” The definition adds that altering biological sex characteristics “DOES NOT INCLUDE MALE CIRCUMCISION.”
Payment barred“NO STATE OR FEDERAL FUNDS, MEDICAID REIMBURSEMENTS, OR INSURANCE COVERAGE MAY BE USED TO PAY FOR ANY PROHIBITED MEDICAL INTERVENTIONS DESCRIBED IN SUBSECTION (3) OF THIS SECTION.”
Text of Initiative 110, section 12-30-125.
The September 9, 2025 fiscal impact statement refers to “recent data on utilization by minors through Medicaid”.
Proposition 134
Proposition 134 (Initiative 109) is on the same ballot

Every committee registration that names Proposition 135 (Initiative 110) also names Proposition 134 (Initiative 109). Families Not Politics registered as "OPPOSING INITIATIVES 109 AND 110". No on 134 and 135, which registered as No on 109 and 110 until September 8, 2026, registered as "THE PURPOSE OF THIS COMMITTEE IS TO COMBAT RISING TRANSPHOBIA IN THE STATE OF COLORADO BY OPPOSING COLORADO BALLOT MEASURES 134 AND 135 (FORMERLY KNOWN AS BALLOT INITIATIVES 109 AND 110).". Vote Common Sense registered "TO OPPOSE BALLOT MEASURES 132, 136, 234, 133, 134, 135, 362 AND AMENDMENTS 81 AND 82.". The Kim Monson Show's article of August 18, 2026, “Families Not Politics reports $818,915 against Protect Kids Colorado’s $98,149”, reports the money for and against the two measures together: “The committee working to defeat Colorado's Initiative 109 and Initiative 110 has reported about eight times what the committee backing them has raised, with most of it from advocacy organizations and foundations.” The July 11, 2025 review and comment memorandum for Initiative 110 is addressed to Michele Austin and Erin Lee, the designated representatives also named for Proposition 134 (Initiative 109).

Read the guide on Proposition 134 (Initiative 109)
State campaign-finance registrations; The Kim Monson Show, August 18, 2026.
Legislative votes on requirements and restrictions

Among 1,490 Colorado bills with recorded votes from 2021 through 2026, 110 require, restrict or forbid conduct by a person, business or organization; that group includes ten borderline classifications. Legislators cast 4,113 votes in favor and 1,530 against those bills. This broad comparison does not identify a legislator’s position on Proposition 135.

Colorado General Assembly roll call records, 2021 through 2026.
The money02

The fiscal note estimates no state revenue and no state spending in the first two years

The fiscal impact statement, prepared by Legislative Council Staff and dated September 9, 2025, shows $0 in state revenue, $0 in state expenditures, $0 in transferred funds, no change in TABOR refunds and no change in state staffing in fiscal years 2026-27 and 2027-28. Colorado issues TABOR refunds when state revenue exceeds the constitutional limit.

The September 9, 2025 fiscal note projects small potential savings for Colorado Medicaid and state employee health plans. It attributes that estimate partly to a June 2025 federal rule on essential health benefits. That rule addressed coverage under individual and small-group health plans; it should not be presented as a complete statement of Medicaid coverage requirements.

CMS issued a separate final rule in August 2026 restricting federal Medicaid funding for specified procedures for people under 18 and CHIP funding for those under 19. It is scheduled to take effect October 13, 2026. The Colorado fiscal estimate predates that rule and does not estimate its effect on Proposition 135’s costs.

The Division of Insurance, State Medical Board and other mental-health professional boards would update materials, inform regulated professionals and adopt rules. The fiscal note assumes providers and insurers will comply, with no additional appropriation needed. Complaints, administrative actions or fines could produce small increases in agency revenue and workload; civil cases could add work for the courts. State and local employee health plans could also have small premium savings.

The two fiscal documents

The July 28, 2025 fiscal summary said costs could continue or rise if patients had to travel to other states for care. The September 9, 2025 fiscal impact statement estimates no state revenue and no state expenditures in either of the first two fiscal years.

The July summary and the September fiscal note say different things about cost

Two Legislative Council Staff documents estimate what Proposition 135 would cost the state, and they are different kinds of document. The fiscal summary of July 28, 2025 "contains a preliminary assessment of the measure's fiscal impact". It warned that where the surgeries are required by federal law as a necessary health benefit under Medicaid, "costs may continue and even increase if patients must be transported to other states to receive care". The fiscal impact statement of September 9, 2025 is the full statement the summary said would follow, and it estimates zero in every row of Table 1. Legislative Council Staff "may revise this estimate for the ballot information booklet (Blue Book) if new information becomes available".

Families Not Politics and No on 134 and 135 oppose Propositions 134 and 135 (Initiatives 109 and 110). No on 134 and 135 used the name No on 109 and 110 until September 8, 2026. Families Not Politics describes its purpose in terms of privacy and keeping politicians out of private decisions; No on 134 and 135 says it opposes transphobia.

Vote Common Sense’s registration covers nine measures, The People’s No covers four, and Protect Kids Colorado supports Propositions 133, 134 and 135 (Initiatives 108, 109 and 110). All seven committees cover multiple measures; none of their totals can be attributed to Proposition 135 alone. The Kim Monson Show reported on August 18, 2026 that Protect Kids Colorado supports Initiatives 109 and 110.

The two Legislative Council Staff fiscal documents

The July 28, 2025 fiscal summary said costs could continue or rise if patients had to travel to other states for care. The September 9, 2025 fiscal impact statement estimates no state revenue and no state expenditures in either of the first two fiscal years.

Legislative Council Staff fiscal summary, July 28, 2025; fiscal impact statement, September 9, 2025, Table 1.
Measure provisions03

The prohibition, and the three kinds of treatment the definitions exclude

The measure defines "ALTERING BIOLOGICAL SEX CHARACTERISTICS" by the reason for the treatment: the phrase "MEANS TREATMENT IN RESPONSE TO A MINOR’S PERCEPTION OF SEX OR GENDER". Three kinds of treatment are excluded by name: the definition says "IT DOES NOT INCLUDE TREATMENT FOR PERSONS BORN WITH A MEDICALLY VERIFIABLE DISORDER OF SEX DEVELOPMENT OR TREATMENT FOR ACQUIRED PHYSICAL OR CHEMICAL ABNORMALITIES." and adds that the phrase "DOES NOT INCLUDE MALE CIRCUMCISION".

The prohibition covers surgery. It does not prohibit nonsurgical treatment, including puberty blockers or cross-sex hormones. The subsection heading and legislative declaration use the broader phrase “medical interventions,” but the operative prohibition names surgery.

The measure specifies no penalty and provides no exception for parental consent. Its fiscal documents anticipate complaints to the Department of Regulatory Agencies and civil cases in the Judicial Department. The measure includes a severability clause, which would keep the rest in effect if part is found invalid. Its legislative declaration says surgical treatments can cause irreversible consequences, including sterility, and compares the restriction with Colorado’s age limits for alcohol and smoking.

Three treatment exclusions

The definition excludes treatment for people born with a medically verifiable disorder of sex development, treatment for acquired physical or chemical abnormalities, and male circumcision. The fiscal note’s summary mentions only the first exclusion; the measure’s definition contains all three.

Text of Initiative 110, section 12-30-125 (2)(a); Legislative Council Staff fiscal impact statement, September 9, 2025, Summary of Measure.
Terms the measure defines, and one the fiscal note uses
Altering biological sex characteristicsThe measure defines the phrase as “TREATMENT IN RESPONSE TO A MINOR’S PERCEPTION OF SEX OR GENDER”, and states that “IT DOES NOT INCLUDE TREATMENT FOR PERSONS BORN WITH A MEDICALLY VERIFIABLE DISORDER OF SEX DEVELOPMENT OR TREATMENT FOR ACQUIRED PHYSICAL OR CHEMICAL ABNORMALITIES.” and that it “DOES NOT INCLUDE MALE CIRCUMCISION.”
Health-care professionalUnder the measure, any person licensed in Colorado or another state “TO PRACTICE MEDICINE, CHIROPRACTIC, NURSING, PHYSICAL THERAPY, PODIATRY, DENTISTRY, PHARMACY, OPTOMETRY, PSYCHIATRY, PSYCHOLOGY, MENTAL HEALTH THERAPY, OR OTHER HEALING ARTS”, together with any professional corporation or other professional entity made up of such providers.
MinorUnder the measure, “AN INDIVIDUAL WHO IS UNDER EIGHTEEN YEARS OF AGE”.
Essential Health BenefitsBenefits that individual and small-group health plans generally must cover under federal law. The June 2025 CMS rule changed whether specified sex-trait modification procedures count as essential health benefits; it did not itself prohibit plans from offering them as additional benefits.
SeverabilityA provision keeping the rest of a law in effect if a court strikes down part of it. The measure has one: “IF ANY SECTION OF THIS SECTION IS FOUND UNCONSTITUTIONAL OR INVALID, THE REMAINING SECTIONS SHALL REMAIN IN EFFECT.”
The reviewers asked the proponents on July 11, 2025: “What does “altering biological sex characteristics” mean? Would the proponents consider defining the phrase?”

The measure bars public and private payment for the surgery it prohibits

Subsection (4) says "NO STATE OR FEDERAL FUNDS, MEDICAID REIMBURSEMENTS, OR INSURANCE COVERAGE MAY BE USED TO PAY FOR ANY PROHIBITED MEDICAL INTERVENTIONS DESCRIBED IN SUBSECTION (3) OF THIS SECTION." The bar reaches private insurance as well as Medicaid and state and federal money, and because it refers back to subsection (3), it covers the surgery that subsection (3) prohibits. The ballot title carries both parts, including "prohibiting the use of state or federal funds, Medicaid reimbursement, or insurance coverage to pay for this type of surgery".

The committees' organization money by source, opponents and the supporter
Families Not Politics reports $1,086,436.43 from organizations in 65 filings. The largest: Cobalt Advocates $254,000 in 6 filings; One Colorado $200,000; One Colorado Education Fund $126,836.05 in 33 filings. Because its registration names two measures, none of these amounts can be attributed to Proposition 135 alone.
Vote Common Sense reports $395,000 from organizations in 9 filings. The largest: Green Advocacy Project $200,000; Coloradans for Real Safety Solutions $50,000; Colorado Immigrant Rights Coalition Action Fund $50,000. Because its registration covers several measures, none of these amounts can be attributed to Proposition 135 alone.
No on 134 and 135 reports $5,000 from organizations in 2 filings. The largest: Denver Democratic Socialists of America $5,000 in 2 filings. Because its registration names two measures, none of these amounts can be attributed to Proposition 135 alone.
Protect Kids Colorado, whose registration supports the measure, reports $61,259 from organizations in 15 filings. The largest: Pikes Peak Citizens for Life $19,000 in 2 filings; Protect Kids Colorado, 501(c)4 $17,000 in 3 filings; Truth and Liberty Foundation $10,000. Because its registration covers three measures, none of these amounts can be attributed to Proposition 135 alone.
The filings record no organization contributions to Protect Trans Kids. Contributions from individuals are outside this view.
The People's No reports $100,000 from organizations in one filing. The largest: COLOR Action Fund $100,000. Because its registration covers several measures, none of these amounts can be attributed to Proposition 135 alone.
The filings record no organization contributions to People for a Fair Colorado. Contributions from individuals are outside this view.
TRACER filing, October 3, 2026.
Campaign support and opposition04
For
Against
TRACER filing, October 7, 2026
From the show05
Show coverage
September 29, 2026Propositions 133 to 135, Data Center Incentives, Fall Driving Hazards and State Farm's Dividend Listen from 1:17:42
September 29, 2026The Kim Monson Show, September 29, 2026: Erin Lee, Susan Kochevar, Roger Mangan, and Jon Boesen Listen from 1:17:42
August 27, 2026Three Protect Kids Colorado Initiatives Reach the Ballot as Liberty Toastmasters Take Apart Political Labels Listen from 1:21:02
August 18, 2026An OpenAI Model Breaches Hugging Face, Corporate Money Against Protect Kids Colorado, and California’s Electric Vehicle Push Listen from 1:03:12
August 14, 2026Douglas County’s Collective Bargaining Question, a 628-Name Candidate Pledge, and the American System Listen from 20:17
July 23, 2026Eight Years of Colorado Decline and the Fight to Protect Its Children Listen from 1:14:36
June 23, 2026Salvage Yard Fires, a Colorado Boulevard Bus Plan, and Dark Money in the Primaries Listen from 1:46:51
June 22, 2026Tariffs, Tick-Borne Illness, and the Fight to Protect Colorado’s Kids Listen from 21:25
May 12, 2026Supreme Court Final Weeks, the Legislature’s Last Day, and a Prairie Land Grab Listen from 38:36
May 5, 2026Classical Education Returns, the SPLC Hate Group Racket, and Prairie Property Rights Listen from 21:23
February 17, 2026Citizen Petitions to Protect Children, Legalizing Prostitution in Colorado, and Border Security Milestones Listen from 33:15
The Kim Monson Show
Newsroom coverage
September 11, 2026HB25-1309 makes state-regulated insurers cover 14 categories of gender transition care Read the article
September 11, 2026Proposition 135 would ban surgery on minors to alter biological sex Read the article
Colorado column, August 18, 2026Families Not Politics reports $818,915 against Protect Kids Colorado’s $98,149 Read the article
March 18, 2026Three Protect Kids Colorado ballot initiatives qualify for November election Read the article
The Kim Monson Newsroom, kimmonson.com
Sources06
Official documents
Text of Initiative 110
Fiscal impact statement (September 9, 2025)
Fiscal summary (July 28, 2025)
Review and comment memorandum (July 11, 2025)
Further reading
Official documents
  • 2026 State Ballot Information BookletColorado Legislative Council · Sep 24, 2026
    The Colorado Legislative Council's 2026 ballot information booklet entry on Proposition 135 explains that it would ban surgeries that alter a minor's biological sex characteristics in response to the minor's perception of sex or gender, with some exceptions, and bar government funds and insurance from paying for them.
  • Ballot analysis (Legislative Council)Legislative Council
    The Colorado General Assembly ballot-analysis landing page for 2026 Proposition 135, titled 'Prohibit Surgery on Minors in Response to Perception of Sex or Gender', listing staff, draft deadlines and links to the draft analyses and Blue Book.
  • Initial fiscal impact abstract (Legislative Council)Legislative Council
    The Legislative Council Staff fiscal summary of Initiative 110, dated July 28, 2025, giving a preliminary assessment that the measure may lower HCPF and state employee insurance costs, raise DORA and Judicial workload, and reduce health-care-sector spending.
  • Fiscal summary (Legislative Council)Legislative Council
    The Legislative Council Staff initial fiscal impact statement for Initiative 110, dated Sept. 9, 2025, finding minimal state revenue and expenditure effects and $0 in the table for FY 2026-27 and 2027-28.
  • Review and comment memo (Legislative Council and Legal Services)Legislative Council and Legal Services
    The July 11, 2025 review and comment memorandum from Legislative Council Staff and the Office of Legislative Legal Services on proposed initiative 2025-2026 #110, stating its purposes (barring sex-altering surgery on minors and public/insurance payment for it) and raising drafting questions.
  • Text of the measure as filedColorado General Assembly
    The original text of Initiative #110, 'Prohibit Certain Surgeries on Minors', as received by Legislative Council Staff, which bars surgery on minors for the purpose of altering biological sex characteristics and bars public or insurance payment for it.
Show 2 more
  • Title Board record (Secretary of State)Secretary of State
    The Secretary of State Title Board results page for Proposed Initiative #110 (2025-2026), giving the title and ballot question set Aug. 6, 2025 (rehearing Aug. 20, 2025): prohibiting surgery on a minor to alter biological sex characteristics and barring public funds.
  • Final text as filed (Secretary of State)Secretary of State
    The final text of 2025-2026 Initiative #110 as received by the Colorado Secretary of State on July 25, 2025, which bars surgery on minors to alter biological sex characteristics and bars state/federal funds, Medicaid or insurance from paying for it.
News coverage
Campaigns and committees
  • Protect Kids Colorado - Issue CommitteeColorado Secretary of State
    The Secretary of State TRACER record for Protect Kids Colorado - Issue Committee, whose stated purpose is promoting ballot measures 133, 134 and 135.
  • Families Not PoliticsColorado Secretary of State
    The Secretary of State TRACER record for Families Not Politics, an issue committee opposing Initiatives 109 and 110 (Propositions 134 and 135).
  • Vote Common SenseColorado Secretary of State
    The Secretary of State TRACER record for Vote Common Sense, an issue committee opposing measures including 135, reporting 2026-cycle contributions of $495,000.00 and expenditures of $81,367.00 as of Sept. 21, 2026, matching the guide.
  • Protect Trans KidsColorado Secretary of State
    Colorado Secretary of State TRACER committee record for Protect Trans Kids, a statewide small scale issue committee registered 05/27/2026 whose stated purpose is opposing ballot measures 109 and 110.
  • No on 134 and 135Colorado Secretary of State
    The Secretary of State TRACER record for No on 134 and 135, an issue committee opposing Propositions 134 and 135 (formerly Initiatives 109 and 110).
  • The People's NoColorado Secretary of State
    The Secretary of State TRACER record for The People's No, an issue committee formed to defeat measures including Initiative 110 (Proposition 135), reporting $100,000.00 in 2026-cycle contributions and $0.00 in expenditures as of Sept. 21, 2026, matching the guide.
Show 1 more
Text of the measure

Be it enacted by the people of the State of Colorado: SECTION 1. Legislative Declaration. (1) The people of Colorado do hereby find and declare that: (a) Children lack the maturity to make permanent, life-altering medical decisions; (b) Medical treatments or interventions that attempt to surgically alter a minor child’s biological sex often result in serious, irreversible consequences, including sterility; (c) European nations, including Sweden, Finland, and the United Kingdom, have halted surgery due to the serious and widespread harm resulting from that intervention; and (d) Colorado law already protects children from other, permanent and potentially life- altering decisions, such as consuming alcohol and smoking. The same protections should apply to irreversible medical interventions related to biological sex. SECTION 2. In Colorado Revised Statutes, add 12-30-125 as follows: 12-30-125. Prohibition on surgery for minors – prohibition on state funding for surgery - short title – definitions. (1) Short title. THE SHORT TITLE OF THIS SECTION IS THE “PROTECT CHILDREN FROM IRREVERSIBLE SEX CHANGE SURGERY ACT”. (2) Definitions. AS USED IN THIS SECTION, UNLESS THE CONTEXT OTHERWISE REQUIRES: (a) “ALTERING BIOLOGICAL SEX CHARACTERISTICS” MEANS TREATMENT IN RESPONSE TO A MINOR’S PERCEPTION OF SEX OR GENDER. IT DOES NOT INCLUDE TREATMENT FOR PERSONS BORN WITH A MEDICALLY VERIFIABLE DISORDER OF SEX DEVELOPMENT OR TREATMENT FOR ACQUIRED PHYSICAL OR CHEMICAL ABNORMALITIES. “ALTERING BIOLOGICAL SEX CHARACTERISTICS” DOES NOT INCLUDE MALE CIRCUMCISION. (b) “HEALTH-CARE PROFESSIONAL” MEANS ANY PERSON LICENSED IN THIS STATE OR ANY OTHER STATE TO PRACTICE MEDICINE, CHIROPRACTIC, NURSING, PHYSICAL THERAPY, PODIATRY, DENTISTRY, PHARMACY, OPTOMETRY, PSYCHIATRY, PSYCHOLOGY, MENTAL HEALTH THERAPY, OR OTHER HEALING ARTS. THE TERM INCLUDES ANY PROFESSIONAL CORPORATION OR OTHER PROFESSIONAL ENTITY COMPRISED OF SUCH HEALTH-CARE PROVIDERS AS PERMITTED BY THE LAWS OF THIS STATE. (c) “MINOR” MEANS AN INDIVIDUAL WHO IS UNDER EIGHTEEN YEARS OF AGE. (3) Prohibition on medical interventions on minors. A HEALTH-CARE PROFESSIONAL OR OTHER PERSON SHALL NOT KNOWINGLY PERFORM, PRESCRIBE, ADMINISTER, OR PROVIDE ANY SURGERY TO A MINOR FOR THE PURPOSE OF ALTERING BIOLOGICAL SEX CHARACTERISTICS. (4) NO STATE OR FEDERAL FUNDS, MEDICAID REIMBURSEMENTS, OR INSURANCE COVERAGE MAY BE USED TO PAY FOR ANY PROHIBITED MEDICAL INTERVENTIONS DESCRIBED IN SUBSECTION (3) OF THIS SECTION. (5) Severability. IF ANY SECTION OF THIS SECTION IS FOUND UNCONSTITUTIONAL OR INVALID, THE REMAINING SECTIONS SHALL REMAIN IN EFFECT. SECTION 3. Effective date - applicability. This measure shall become effective on January 1, 2027, and apply to violations occurring on or after the effective date.