DemocratIn office since Nov 2022

Tom Sullivan

Colorado State Senator, District 27 since 2022. Re-elected in 2026. Next on the ballot in 2030.

Colorado State Senator, District 27Born 1956

Official website Wikipedia

In office: 3 yrs; Since 2022
Bills became law: 11; 21 sponsored, 2025–2026 session
Votes missed: 2.5%; Chamber median 1.3%
With party: 98%; On votes splitting the parties
Last margin: +22.9; Won 2026
Next election: 2030; Nov 5, 2030

Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Oct 27, 2026, 1:52 PM ET

Committees

As of 2026-10.

State, Veterans and Military Affairs · vice chair
Transportation Legislation Review
Transportation and Energy

Source: Open States committeesUpdated Oct 27, 2026, 9:43 AM ET

Legislation

2025–2026 session · 21 sponsored · 11 became law

BillIntroCmteSenateHouseLaw

HB 1424 Transportation Network Company Consumer Protection
Business & Economic Development · Became law Jun 2026

SB 93 Workers' Compensation Insurance Coverage Verification
Labor & Employment · Became law May 2026

HB 1144 Prohibit Three-Dimensional Printing Firearms & Components
Crimes, Corrections, & Enforcement · Became law May 2026

SB 4 Expand List of Petitioners for Protection Order
Courts & Judicial · Became law Apr 2026

HB 1041 Electronic Vehicle Records
Transportation & Motor Vehicles · Became law Mar 2026

Source: Open States billsUpdated Nov 6, 2026, 4:22 PM ET

Voting record

2025–2026 session · placement by roll-call votes

Where Sullivan sits in the Colorado State Senate

Sullivan is closer to the center than 29% of the chamber's Democrats.

Closest: , Jessie Danielson, Julie Gonzales

Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 4:47 PM ET

With Sullivan’s party

Votes with the chamber's Democrats98%
Cosponsorships of the other party's bills40%

Black tick: the average of Democrats in the Colorado State Senate.

Source: 99chambers legislative scores from roll calls and cosponsorships

Key votes

Votes chosen for their effect, not their side: Sullivan’s vote, each party’s majority, and the result. An orange vote differs from most Democrats.

Date	Bill	Sullivan	Dem. majority	Rep. majority	Result
May 13, 2026	SB 115: Post-Conviction Relief for Certain Offenders	No	Yes	No	Passed 18–17
May 13, 2026	HB 1274: State Agency Payments to Grant Recipients	Yes	Yes	No	Passed 18–17
May 13, 2026	SB 131: Sports Betting Protections	No	Yes	No	Passed 20–15
May 13, 2026	HB 1255: Social Media Duty to Report & Search Warrants	Yes	Yes	No	Passed 18–17
May 13, 2026	HB 1418: Online Add-on Transaction Fee Youth Service Enterprise	No	Yes	No	Passed 18–17

Source: 99chambers key votes from Congress.gov, Voteview and Open States roll calls

Career

Offices held, and every time Sullivan was on a ballot. Filled marks are general elections won; hollow marks are primaries; an orange outline is a loss.

2016201720182019202020212022202320242025202620272028Colorado House of Representatives, District 37 Colorado State Senate, District 27

Source: 99chambers results archive (MEDSL, Klarner, state election offices)

Elections

Margin against the seat’s presidential baseline: how the seat voted for president in the same or nearest year.

Year	Race	Result	Margin	Seat	+/−
2026	Colorado Senate District 27	Won	D+22.9	D+12.3	+10.6
2022	Colorado State Senate, District 27	Won	D+9.8	—	—
2020	Colorado House of Representatives, District 37	Won	D+11.2	—	—
2018	Colorado House of Representatives, District 37	Won	D+8.1	—	—
2016	Colorado State Senate, District 27	Lost	R+6.9	—	—