Colorado Senate · District 28
Mike Weissman
Democratic
Votes with the Senate President
96%
On 642 contested votes where both voted · 98% on all votes
Votes with own party
99%
Partisan rank: 1 of 35 in the Senate (tied with 5 others)
Didn't vote at roll call
0.1%
1 of 1,697 roll calls
Bills passed
59
81 sponsored · 56 became law · Rank 7 of 35 in the Senate
Bills that became law
56
of 59 passed · 3 vetoed
Where they sit
Every current senator, placed from most liberal to most conservative by how they voted on contested bills.
← Most liberalThe aisleMost conservative →
Votes with DemocratsCrosses party linesVotes with Republicans
Mike Weissman's seat is marked. Seats run from most liberal (left) to most conservative (right), by contested floor votes. Color shows how often each member crosses party lines toward the middle on votes that divide the parties: solid blue or red means almost never, and purple means on at least 1 in 5 of those votes. Gray seats are members too new to score. How these numbers work
Colorado Senate0thpercentile
More liberal than 100% of the Colorado Senate.
Most liberalMost conservative
Most liberal of 35
The scores
How these numbers work →Votes with the Senate President
96%
Each tick is a current senator, by party; the dot is Mike Weissman.
On 642 contested votes where both voted98% on all 1,695 votes where both voted
Votes with own party
99%
Each tick is a current senator, by party; the dot is Mike Weissman.
On 501 party-line votesPartisan rank: 1 of 35 in the Senate (tied with 5 others)No one in the Senate votes with their party more often
Bills
The bills Mike Weissman sponsored this term and how far they got. Co-sponsors aren’t counted.
| Bills | |
|---|---|
| Sponsored | 81 |
| Passed both chambers | 59 |
| Became law | 56 |
| Vetoed by the Governor | 3 |
Rank by bills passed: Rank 7 of 35 in the Senate · 6 of 23 Democrats
A Colorado bill has prime sponsors in each chamber: one or two who carry it in the chamber where it starts, and one or two who carry it in the other. Each prime sponsor is credited in their own chamber; additional sponsors and co-sponsors aren't counted.
Bills that passed both chambers
| Bill | Result | Final action |
|---|---|---|
| HB26-1276 Protect Safety of Individuals Who Are Immigrants |
Became law | June 4, 2026 |
| HB26-1274 State Agency Payments to Grant Recipients |
Became law | June 4, 2026 |
| HB26-1272 Extreme Temperatures Worker Protections |
Became law | June 4, 2026 |
| HB26-1226 Manage Emissions from Electric Generating Units |
Became law | June 4, 2026 |
| SB26-190 Release Information About Peace Officer Use of Force |
Became law | June 3, 2026 |
| SB26-115 Post-Conviction Relief for Certain Offenders |
Became law | June 3, 2026 |
| SB26-005 Rights Violation in Immigration Enforcement Remedy |
Vetoed | June 3, 2026 |
| HB26-1289 Modification of Certain Tax Expenditures |
Became law | June 3, 2026 |
| HB26-1143 Non-Employment Educational Opportunities Background Check Information |
Became law | June 3, 2026 |
| HB26-1084 Voter Transparency in Ballot Measures |
Became law | June 3, 2026 |
| SB26-116 Property Tax Modifications |
Became law | June 2, 2026 |
| HB26-1210 Prohibit Surveillance Price & Wage Setting |
Vetoed | June 2, 2026 |
| SB26-036 Prison Population Management Measures |
Became law | June 1, 2026 |
| HB26-1315 Accurate Documents for Parole Determinations |
Became law | June 1, 2026 |
| HB26-1113 Modifications to Elections |
Became law | June 1, 2026 |
| SB26-042 Revenue Classification Taxpayers Bill of Rights |
Became law | May 29, 2026 |
| HB26-1123 Preventing Sexual Abuse in Jails |
Became law | May 27, 2026 |
| SB26-159 Inmate Earned Time Formula for Sentence to Department of Corrections |
Became law | May 19, 2026 |
| SB26-158 Youthful Offender Early Parole Procedure |
Became law | May 19, 2026 |
| SB26-095 Measures to Support Victim-Survivors of Crimes |
Became law | May 19, 2026 |
| SB26-083 Rule Review Bill |
Became law | May 5, 2026 |
| HB26-1186 Sunset Regulation of Cash-Bonding Agents |
Became law | May 4, 2026 |
| HB26-1134 Fairness & Transparency in Municipal Court |
Became law | April 27, 2026 |
| HB26-1039 Adding Municipal Jails to County Jail Oversight Requirements |
Became law | April 27, 2026 |
| SB26-084 No Waiver for Legal Privileges State Auditor Documents |
Became law | April 20, 2026 |
| HB26-1191 Examination of School District Records |
Became law | April 13, 2026 |
| HB26-1017 Criminal Restitution Prohibited for Insurers |
Became law | April 2, 2026 |
| HB26-1035 Enactment of Colorado Revised Statutes 2025 |
Became law | March 26, 2026 |
| HB26-1013 Ratio Utility Billing Systems |
Became law | March 26, 2026 |
| HB25B-1003 Insurance Premium Tax Rate for Home Offices |
Became law | Aug. 28, 2025 |
| SB25-300 Revisor's Bill |
Became law | June 4, 2025 |
| SB25-173 Revenue Classification Taxpayers Bill of Rights |
Became law | June 4, 2025 |
| SB25-304 Measures to Address Sexual Assault Kit Backlog |
Became law | June 3, 2025 |
| HB25-1289 Metropolitan District Leases & Property Tax Exemptions |
Became law | June 3, 2025 |
| HB25-1236 Residential Tenant Screening |
Became law | June 3, 2025 |
| HB25-1117 Vehicle Immobilization Company Regulation |
Became law | June 3, 2025 |
| HB25-1275 Forensic Science Integrity |
Became law | June 2, 2025 |
| SB25-179 Sunset Identity Theft & Financial Deterrence Act |
Became law | May 31, 2025 |
| SB25-020 Tenant and Landlord Law Enforcement |
Became law | May 28, 2025 |
| SB25-184 Sunset HOA Information & Resource Center |
Became law | May 24, 2025 |
| SB25-276 Protect Civil Rights Immigration Status |
Became law | May 23, 2025 |
| HB25-1239 Colorado Anti-Discrimination Act |
Became law | May 22, 2025 |
| HB25-1168 Housing Protections for Victim-Survivors |
Became law | May 22, 2025 |
| HB25-1296 Tax Expenditure Adjustment |
Became law | May 16, 2025 |
| HB25-1147 Fairness & Transparency in Municipal Court |
Vetoed | May 16, 2025 |
| SB25-130 Providing Emergency Medical Services |
Became law | May 14, 2025 |
| HB25-1315 Vacancies in the General Assembly |
Became law | May 12, 2025 |
| HB25-1010 Prohibiting Price Gouging in Sales of Necessities |
Became law | May 9, 2025 |
| SB25-125 Rule Review Bill |
Became law | May 5, 2025 |
| HB25-1185 Child Conceived from Sex Assault Court Proceedings |
Became law | May 1, 2025 |
| HB25-1148 Criminal Protection Order & Protection Order Violation |
Became law | April 30, 2025 |
| HB25-1090 Protections Against Deceptive Pricing Practices |
Became law | April 21, 2025 |
| SB25-062 Failure to Appear Charges in Municipal Court |
Became law | April 17, 2025 |
| HB25-1109 Gender Identity Certificate of Death |
Became law | April 17, 2025 |
| HB25-1181 Colorado Rangers Law Enforcement Shared Reserve |
Became law | March 26, 2025 |
| HB25-1114 Defense Review of Tangible Object for Criminal Trial |
Became law | March 26, 2025 |
| HB25-1081 Reporting Statistics on Restitution |
Became law | March 26, 2025 |
| HB25-1035 Collaborative Management Program Updates |
Became law | March 26, 2025 |
| HB25-1033 Medicaid Third-Party Liability Payments |
Became law | March 7, 2025 |
Budget projects
Colorado's Long Bill, the state budget, doesn't name the legislator who asked for an item, so there's no budget figure for Colorado legislators.
Contested votes where they split
26 against the Senate President; 13 against most of their party.
| Date | Bill and motion | Their vote | Senate President | Most of their party |
|---|---|---|---|---|
| May 13, 2026 | SB26-048: Remove Exception to Marry with Judicial Approval House Amendments / Repassage |
Yea | Nay (split) | Nay (split) |
| April 29, 2026 | SB26-162: Sensitive Test Results in Health Care Third Reading / Passage |
Nay | Yea (split) | Yea (split) |
| April 29, 2026 | SB26-091: Exclusion of Newspaper Deliverers as Employees Third Reading / Passage |
Nay | Yea (split) | Yea (split) |
| April 29, 2026 | SB26-045: Nuclear Workforce Development & Education Program Third Reading / Passage |
Nay | Yea (split) | Yea (split) |
| April 17, 2026 | SB26-066: Regulation of Compounded Weight-Loss Medication Third Reading / Passage |
Nay | Yea (split) | Yea (split) |
| April 16, 2026 | HB26-1380: Repeal Office of Judicial Discipline Ombudsman Third Reading / Passage |
Nay | Yea (split) | Yea (split) |
| April 16, 2026 | SB26-090: Exempt Critical Infrastructure from Right to Repair Third Reading / Passage |
Nay | Yea (split) | Yea (split) |
| April 13, 2026 | SB26-140: Exempt Drugs from Prescription Drug Affordability Board Reviews Third Reading / Passage |
Nay | Yea (split) | Nay |
| April 6, 2026 | SB26-009: Charitable Organization State Sales & Use Tax House Amendments / Concur |
Yea | Nay (split) | Yea |
| March 25, 2026 | SB26-128: Sales & Use Tax Destination Management Company Third Reading / Passage |
Nay | Yea (split) | Yea (split) |
| March 24, 2026 | SB26-121: Overtime Threshold for Agricultural Employees Committee of the Whole / Amendment |
Yea | Nay (split) | Yea |
| March 24, 2026 | SB26-121: Overtime Threshold for Agricultural Employees Committee of the Whole / Amendment |
Yea | Nay (split) | — |
| March 18, 2026 | SB26-098: State & Local Noise Abatement Authority Third Reading / Passage |
Nay | Yea (split) | Yea (split) |
| Feb. 17, 2026 | SR26-001: Morgan County Road Improvements Adoption |
Nay | Yea (split) | Nay |
| May 7, 2025 | SB25-124: Reducing Costs of Health Care for Patients House Amendments / Adhere |
Yea | Nay (split) | Yea |
| April 30, 2025 | HB25-1062: Penalty for Theft of Firearms Third Reading / Passage |
Nay | Yea (split) | Yea (split) |
| April 17, 2025 | HB25-1272: Construction Defects & Middle Market Housing Third Reading / Passage |
Nay | Yea (split) | Yea (split) |
| April 15, 2025 | HB25-1208: Local Governments Tip Offsets for Tipped Employees Third Reading / Passage |
Nay | Yea (split) | Nay |
| April 4, 2025 | HB25-1060: Electronic Fence Detection Systems Third Reading / Passage |
Nay | Yea (split) | Nay |
| April 2, 2025 | SB25-206: 2025-26 Long Appropriations Bill Committee of the Whole / Amendment |
Nay | Yea (split) | Nay |
| April 2, 2025 | SB25-206: 2025-26 Long Appropriations Bill Committee of the Whole / Amendment |
Nay | Yea (split) | Nay |
| March 26, 2025 | SB25-124: Reducing Costs of Health Care for Patients Third Reading / Passage |
Yea | Nay (split) | Yea |
| March 17, 2025 | SB25-160: Motor Vehicle Sales by Manufacturers' Affiliates Third Reading / Passage |
Nay | Yea (split) | — |
| March 14, 2025 | HB25-1040: Adding Nuclear Energy as a Clean Energy Resource Third Reading / Passage |
Nay | Yea (split) | Yea (split) |
| March 7, 2025 | SB25-128: Agricultural Worker Service Providers Access Private Property Third Reading / Passage |
Nay | Yea (split) | Yea (split) |
| March 6, 2025 | SB25-141: Municipal Government Exemption from Energy Code Requirements Third Reading / Passage |
Nay | Yea (split) | Nay |
Every roll call
How Mike Weissman voted on each of the 1,697 floor roll calls while in office, newest first.
| Date | Vote | Their vote | Most of their party | Senate President | Yeas–nays |
|---|---|---|---|---|---|
| Loading… | |||||
Contested and party-line votes link to their own pages; the rest link to the official record.
Contact, committees and caucuses
Contact
- Official page
- leg.colorado.gov
- mike.weissman.senate@coleg.gov
- Capitol office
- State Capitol Room 346, Colorado Building 200 E. Colfax Ave., Denver, CO 80203
303-866-4879
Committees
- Judiciary Chair
- Legislative Audit Vice chair
- Health and Human Services
- Legal Services
Contact details and committee assignments from Open States' data on the Colorado General Assembly, which it collects from the chambers' websites, as of Oct. 15, 2026.
Source: the Colorado General Assembly's floor vote records, Jan. 8, 2025 to May 13, 2026. How these numbers work · Corrections