Nonpartisan · Data from OpenStates / Plural Policy · Colorado
Votes with Republicans
87%
on 236 party-line votes · Senate Republicans median 93%
Cast a vote
96%
Yea or Nay on 940 of 976 roll calls · Senate median 99%
Their bills that became law
19 of 22
as a primary sponsor, this session · Republicans median 21
Roll calls on record
976
2026 Regular Session
Votes and bills updated Oct 10, 2026 from LegiScan (CC BY 4.0), which republishes the legislature’s own records. Profile details from OpenStates / Plural Policy. Figures cover 2026 Regular Session.
How Marc Catlin votes
A party-line vote is a roll call where most voting Democrats and most voting Republicans took opposite sides. Absences and not-voting are never counted. Same method as our Congress pages.
Where Marc Catlin sits in the Senate
Each dot is one member of the Senate, placed by how often they voted on the Democratic side of party-line votes. Marc Catlin is circled.
Always on the Republican sideAlways on the Democratic side
Times they broke with their party
31 of 236 party-line votes, most recent 10 shown.
HB1430 · Transportation Funding Adjustments
Senate: Third Reading Amend (l.014) · 2026-05-13 · Passed 26–9 · most Republicans voted the other way
SB048 · Remove Exception to Marry with Judicial Approval
In plain English Limits the age difference allowed between parties when a minor marries with judicial approval.
Senate: House Amendments Concur · 2026-05-13 · Passed 18–17 · most Republicans voted the other way
SB172 · Front Range Passenger Rail District
Senate: House Amendments Repass · 2026-05-13 · Passed 25–10 · most Republicans voted the other way
SB113 · Require Recovery Residences to Obtain Behavioral Health Administration License
In plain English Requires recovery residences to obtain a license from the behavioral health administration.
Senate: House Amendments Repass · 2026-05-08 · Passed 28–6 · most Republicans voted the other way
HB1184 · Sunset Process Forest Health Council
In plain English Extends the Colorado forest health council by implementing recommendations from the state's 2025 sunset review.
Senate: Conference Committee Report Repass · 2026-05-08 · Passed 27–7 · most Republicans voted the other way
HB1227 · Minors' Rights in Dependency & Neglect Proceedings
In plain English Affirms the rights of children and youth in dependency and neglect court proceedings.
Senate: Third Reading Bill · 2026-05-06 · Passed 28–7 · most Republicans voted the other way
HB1076 · Transportation Statutory Clean-Up
Senate: Third Reading Bill · 2026-05-05 · Passed 28–7 · most Republicans voted the other way
SB142 · Development of Thermal Energy Resources
Senate: House Amendments Repass · 2026-05-05 · Passed 25–7 · most Republicans voted the other way
HB1123 · Preventing Sexual Abuse in Jails
Senate: Third Reading Bill · 2026-05-05 · Passed 27–8 · most Republicans voted the other way
HB1225 · Distributed Energy Resources Requirements
Senate Transportation & Energy: Refer House Bill 26-1225, as amended, to the Committee of the Whole. · 2026-05-04 · Passed 6–2 · most Republicans voted the other way
Closest votes they cast
Roll calls decided by the fewest votes, one per bill.
HB1274 · State Agency Payments to Grant Recipients
In plain English Allows state agencies to pay a percentage of a grant's total value to nonprofit recipients when executing or renewing grant agreements.
Senate: Miscellaneous Recede · 2026-05-13 · Failed 17–17
HB1289 · Modification of Certain Tax Expenditures
Senate: Committee of the Whole Cow * (s.001) · 2026-05-12 · Failed 17–17
HB1418 · Online Add-on Transaction Fee Youth Service Enterprise
In plain English Requires social media platforms offering online gaming to young people to charge fees on add-on purchases and direct revenue to new enterprises funding youth mental health and programming services.
Senate: Third Reading Bill · 2026-05-13 · Passed 18–17
SB115 · Post-Conviction Relief for Certain Offenders
In plain English Allows certain imprisoned offenders to seek post-conviction relief and adjusts state funding accordingly.
Senate: House Amendments Repass · 2026-05-13 · Passed 18–17
HB1054 · Protections for Worker Safety
Senate: Third Reading Bill · 2026-05-13 · Failed 17–18
Democrats they vote with most
Share of contested roll calls (the losing side got at least 10%) where both voted and landed on the same side. Unanimous votes are left out, because on those everyone agrees.
Dylan RobertsDemocrat · District 8 · 270 shared contested votes
45%
Kyle MullicaDemocrat · District 24 · 285 shared contested votes
41%
Nick HinrichsenDemocrat · District 3 · 284 shared contested votes
38%
Their session, month by month
Dark bars are roll calls they were recorded on each month; the red part is the ones without a Yea or Nay (36 in all). Gaps are months the chamber wasn’t voting.
← Colorado Delegation
YeaYeaNayNayYeaYeaYeaYeaYeaYeaNayYeaYeaYeaYeaYeaNayNayYeaYeaYeaNayYeaYeaNayYeaNayYeaNayYeaYeaYeaYeaYeaNayNayNayYeaNayYeaNayYeaYeaNayNayNayNayYeaNayNayYeaYeaYeaYeaYeaNayNayNayNayYea
Their bills, from filing to law
Bills Marc Catlin was a primary sponsor of this session. Most bills from either party never leave committee; in Illinois many never get past the Assignments or Rules committee.
Introduced22
Out of committee21
Passed one chamber21
Passed both chambers20
Became law19
Never left committee0
For comparison, the median Republican member of the Senate has 21 bills that became law this session.
What their bills are about
General Assembly 3Labor & Employment 3Agriculture 2Fiscal Policy & Taxes 2Transportation & Motor Vehicles 2Natural Resources & Environment 2
Adjust Experience Modification Factor in Workers' Compensation
In plain English Adjusts how employers' workers' compensation insurance rates are calculated based on their injury history.
Official synopsis: Concerning the adjustment of an employer's experience modification factor in workers' compensation.
Became lawGovernor Signed · 2026-06-02
Colorado Artist Companies
In plain English Allows the creation of artist companies in Colorado and appropriates money for implementation.
Official synopsis: Concerning the authorization to establish an artist company in the state, and, in connection therewith, enacting the "Colorado Artist Company act", and making an appropriation.
Became lawGovernor Signed · 2026-06-02
Extend Conservation Easement Tax Credit
In plain English Extends the conservation easement tax credit through income tax year 2036.
Official synopsis: Concerning the extension of the conservation easement tax credit through income tax year 2036.
Became lawGovernor Signed · 2026-06-01
Lobbyist Regulation
Concerning the regulation of lobbyists, and, in connection therewith, making an appropriation.
VetoedGovernor Vetoed · 2026-05-29
Wildlife Collision Prevention
In plain English Allows drivers to pay an optional fee during vehicle registration to fund wildlife crossings and related transportation improvements.
Official synopsis: Concerning optional fees during motor vehicle registration that primarily support wildlife projects, and, in connection therewith, using the proceeds of a newly created optional fee to construct wildlife crossings and other transportation improvements and making an appropriation.
Became lawGovernor Signed · 2026-05-27
Vulnerable Adult Financial Exploitation Banking
In plain English Requires financial institutions to implement procedures to protect vulnerable adults from financial exploitation.
Official synopsis: Concerning the protection of vulnerable adults from financial exploitation in relation to financial institutions.
Became lawGovernor Signed · 2026-05-26
Nuclear Workforce Development & Education Program
In plain English Creates a nuclear workforce development and education program to promote job training opportunities in Colorado's nuclear sector.
Official synopsis: Concerning promoting workforce development opportunities in Colorado's nuclear sector.
FailedHouse Committee on Appropriations Postpone Indefinitely · 2026-05-12
Western Colorado University Anniversary
In plain English Recognizes the 125th anniversary of Western Colorado University.
Official synopsis: Concerning the recognition of the 125th anniversary of Western Colorado University.
Became lawSigned by the President of the Senate · 2026-05-05
Technical Changes to Energy & Carbon Management Statutes
Concerning technical changes to energy and carbon management statutes.
Became lawGovernor Signed · 2026-05-05
Technical Revision Online Marketplaces Requirement
Concerning a technical revision to language in Senate Bill 25-070 related to a requirement for online marketplaces with respect to third-party sellers.
Became lawGovernor Signed · 2026-05-05
Clarifying Validity of Common Law Marriage
In plain English Restores a previously repealed provision clarifying the validity of common law marriage.
Official synopsis: Concerning clarifying the validity of common law marriage by restoring a previously repealed provision.
Became lawGovernor Signed · 2026-05-05
Person's Rights Related to Their Children
In plain English Submits to voters a proposed constitutional amendment establishing inalienable rights related to a person's children.
Official synopsis: Submitting to the registered electors of the state of Colorado an amendment to the Colorado constitution concerning a person's inalienable rights related to their children.
FailedHouse Committee on State, Civic, Military, & Veterans Affairs Postpone Indefinitely · 2026-04-20
Security Deposits & Post-Closing Occupancy Agreements
In plain English Allows landlords to require security deposits exceeding the statutory limit when a tenant signs a post-closing occupancy agreement.
Official synopsis: Concerning an exception to the statutory limit on the amount that a landlord may require a tenant to provide as a security deposit in cases where the landlord and tenant have executed a post-closing occupancy agreement.
Became lawGovernor Signed · 2026-04-20
Weight for Vehicles with Child Restraint System
In plain English Increases the gross vehicle weight rating limit for passenger vehicles required to use child restraint systems.
Official synopsis: Concerning increasing the gross vehicle weight rating limit for a passenger motor vehicle for which the use of a child restraint system is required.
Became lawGovernor Signed · 2026-04-20
Designate Educators & Teachers Memorial Highway
In plain English Designates a 4-mile stretch of State Highway 92 in Delta County as the "Educators and Teachers Memorial Highway.
Official synopsis: Concerning the designation of State Highway 92 in Delta County from Mile Marker 3 to Mile Marker 7 as the "Educators and Teachers Memorial Highway".
Became lawSigned by the President of the Senate · 2026-04-16
“In plain English” lines are written by ThePolitibase with AI (Claude), from the official synopsis only; the synopsis is the authoritative text. Descriptions are the legislature’s own synopsis. Bill data from LegiScan, CC BY 4.0.
Loading committees…
SB165 · 2026-05-13
Species Conservation Measures (Senate: House Amendments Concur)
SB165 · 2026-05-13
Species Conservation Measures (Senate: House Amendments Repass)
HB1236 · 2026-05-13
Arbitration Reform (Senate: Third Reading Bill)
HB1418 · 2026-05-13
Online Add-on Transaction Fee Youth Service Enterprise (Senate: Third Reading Bill)
SB187 · 2026-05-13
Establishing Commission on Medicaid (Senate: House Amendments Concur)
SB187 · 2026-05-13
Establishing Commission on Medicaid (Senate: House Amendments Repass)
HB1416 · 2026-05-13
Transfers to General Fund & Colorado Economic Development Fund (Senate: Third Reading Bill)
SB172 · 2026-05-13
Front Range Passenger Rail District (Senate: House Amendments Concur)
SB172 · 2026-05-13
Front Range Passenger Rail District (Senate: House Amendments Repass)
SB115 · 2026-05-13
Post-Conviction Relief for Certain Offenders (Senate: House Amendments Concur)
SB115 · 2026-05-13
Post-Conviction Relief for Certain Offenders (Senate: House Amendments Repass)
HB1425 · 2026-05-13
Applied Behavior Analysis Services (Senate: Third Reading Bill)
HB1429 · 2026-05-13
County Administration Public Assistance Programs (Senate: Third Reading Bill)
SB035 · 2026-05-13
Increase of Traffic Violation Penalties (Senate: House Amendments Concur)
SB035 · 2026-05-13
Increase of Traffic Violation Penalties (Senate: House Amendments Repass)
HB1223 · 2026-05-13
Modifying Certain Tax Expenditures (Senate: Third Reading Amend (l.031))
HB1223 · 2026-05-13
Modifying Certain Tax Expenditures (Senate: Third Reading Bill)
HB1054 · 2026-05-13
Protections for Worker Safety (Senate: Third Reading Bill)
SB078 · 2026-05-13
Changes to Institutions of Higher Education Statutes (Senate: House Amendments Concur)
SB078 · 2026-05-13
Changes to Institutions of Higher Education Statutes (Senate: House Amendments Repass)
SB155 · 2026-05-13
Increase Access Homeowner's Insurance Enterprise (Senate: House Amendments Concur)
SB155 · 2026-05-13
Increase Access Homeowner's Insurance Enterprise (Senate: House Amendments Repass)
HB1250 · 2026-05-13
Procedures Related to Civil Asset Forfeiture (Senate: Third Reading Bill)
SB048 · 2026-05-13
Remove Exception to Marry with Judicial Approval (Senate: House Amendments Concur)
SB048 · 2026-05-13
Remove Exception to Marry with Judicial Approval (Senate: House Amendments Repass)
SB042 · 2026-05-13
Revenue Classification Taxpayers Bill of Rights (Senate: House Amendments Concur)
SB042 · 2026-05-13
Revenue Classification Taxpayers Bill of Rights (Senate: House Amendments Repass)
SB002 · 2026-05-13
Energy Affordability (Senate: House Amendments Concur)
SB002 · 2026-05-13
Energy Affordability (Senate: House Amendments Repass)
SB003 · 2026-05-13
End-of-Life Management of Electric Vehicle Batteries (Senate: House Amendments Concur)
SB003 · 2026-05-13
End-of-Life Management of Electric Vehicle Batteries (Senate: House Amendments Repass)
HB1433 · 2026-05-13
Funding to Sustain Fire-Related Services (Senate: Third Reading Bill)
HB1289 · 2026-05-13
Modification of Certain Tax Expenditures (Senate: Third Reading Amend (l.081))
HB1289 · 2026-05-13
Modification of Certain Tax Expenditures (Senate: Third Reading Amend (l.082))
HB1289 · 2026-05-13
Modification of Certain Tax Expenditures (Senate: Third Reading Bill)
HB1335 · 2026-05-13
Abortion Medication Access on College Campuses (Senate: Third Reading Bill)
HB1309 · 2026-05-13
Abuse in Cases of Separation (Senate: Third Reading Bill)
SB184 · 2026-05-13
Firefighter Cancer Benefits & Workers' Compensation (Senate: House Amendments Concur)
SB184 · 2026-05-13
Firefighter Cancer Benefits & Workers' Compensation (Senate: House Amendments Repass)
SB093 · 2026-05-13
Workers' Compensation Insurance Coverage Verification (Senate: House Amendments Concur)
SB093 · 2026-05-13
Workers' Compensation Insurance Coverage Verification (Senate: House Amendments Repass)
SB023 · 2026-05-13
School Finance Act (Senate: House Amendments Concur)
SB023 · 2026-05-13
School Finance Act (Senate: House Amendments Repass)
HB1424 · 2026-05-13
Transportation Network Company Consumer Protection (Senate: Third Reading Bill)
SB131 · 2026-05-13
Sports Betting Protections (Senate: House Amendments Concur)
SB131 · 2026-05-13
Sports Betting Protections (Senate: House Amendments Repass)
HB1141 · 2026-05-13
Discriminatory Practices in Public Schools (Senate: Third Reading Bill)
HB1426 · 2026-05-13
Department of Law Legislative Report (Senate: Third Reading Amend (l.014))
HB1426 · 2026-05-13
Department of Law Legislative Report (Senate: Third Reading Bill)
HB1272 · 2026-05-13
Extreme Temperatures Worker Protections (Senate: Third Reading Bill)
HB1325 · 2026-05-13
Natural Medicine (Senate: Third Reading Bill)
SB015 · 2026-05-13
Commercial Sexual Activity with a Child Offenses (Senate: House Amendments Concur)
SB015 · 2026-05-13
Commercial Sexual Activity with a Child Offenses (Senate: House Amendments Repass)
SB152 · 2026-05-13
Changes Automated Vehicle Identification System Usage (Senate: House Amendments Concur)
SB152 · 2026-05-13
Changes Automated Vehicle Identification System Usage (Senate: House Amendments Repass)
HB1422 · 2026-05-13
Security Measures for Certain Government Entities (Senate: Third Reading Bill)
HB1255 · 2026-05-13
Social Media Duty to Report & Search Warrants (Senate: Third Reading Bill)
HB1274 · 2026-05-13
State Agency Payments to Grant Recipients (Senate: Miscellaneous Recede)
HB1274 · 2026-05-13
State Agency Payments to Grant Recipients (Senate: Miscellaneous Repass)
SB169 · 2026-05-13
Revisor's Bill (Senate: House Amendments Concur)
Complete voting record from LegiScan (showing the 60 most recent of 976 total roll-call votes this session).
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