Montana · State Representative
Mark Thane
Bills sponsored
14
Became law
5
Cosponsored
68
Roll calls voted
6,129
Voted with their party
97% of 6,113
- This session:
- 17 of 68 cosponsorships on bills led by the other party
- Absent or not voting on 1 of 3,198 roll calls
Service
Every session we hold for Mark Thane, newest first. One page covers them all.
- 69th Legislature, 2025 Regular Session House, District 89 Democrat
- 68th Legislature, 2023 Regular Session House, District 99 Democrat
Committees
Seats and leadership roles, by session.
| Committee | Role | Session |
|---|---|---|
| (H) Taxation | Vice Chair | 2025 |
| (H) Agriculture | Member | 2025 |
| (H) Education | Member | 2025 |
| (H) Rules | Member | 2025 |
| Conference Committee on HB 231 | Member | 2025 |
| Conference Committee on SB 542 | Member | 2025 |
| Joint Rules Committee | Member | 2025 |
| (H) Taxation | Vice Chair | 2023 |
| Revenue Interim Committee | Vice Chair | 2023 |
| (H) Education | Member | 2023 |
| (H) Joint Education | Member | 2023 |
| (H) Local Government | Member | 2023 |
| Free Conference Committee on SB 507 | Member | 2023 |
Bills they sponsored
14 bills as primary sponsor, of which 5 became law. Each number opens the full list.
Latest activity on their bills
| Bill | Title | Where it stands | Last action |
|---|---|---|---|
| HB 4512025 | Revise tax increment financing districts to exclude debt service and certain school levies | Passed both chambers | May 22, 2025 |
| HB 1552025 | Revise class four residential and commercial property taxes | Failed | May 22, 2025 |
| HB 8782025 | Authorize additional funding for coal trust loan program for housing | Failed | May 20, 2025 |
| HB 6402025 | Revising membership in FURS to include airport authority public safety employees | Failed | May 20, 2025 |
| HB 4052025 | Increase on-schedule reimbursement rates for school transportation | Failed | May 20, 2025 |
| HB 912025 | Allow taxpayers to elect to receive electronic correspondence from the department of revenue | Became law | Apr 7, 2025 |
| HB 182025 | Deposit non-levy revenue in school equalization and property tax relief account | Became law | Apr 7, 2025 |
| HB 172025 | Revise terms for forest lands taxation advisory committee | Became law | Feb 27, 2025 |
| HB 4472023 | Provide for exceptions to imposition of income tax on certain nonresidents | Became law | May 19, 2023 |
| HB 3442023 | Require new school buses to be equipped with lap-shoulder belts | Failed | May 8, 2023 |
All 8 they sponsored in the 69th Legislature, 2025 Regular Session ›
How they voted
Most recent first. 6,129 recorded votes in all: 4,588 yes, 1,540 no.
| Date | Bill | Question | Their vote | Result |
|---|---|---|---|---|
| Apr 30, 2025 | SJ 49 | (H) 3rd Reading: Do ConcurInterim study of youth and family behavioral health prevention | Yes | Passed 68–30 |
| Apr 30, 2025 | SJ 49 | (H) 2nd Reading: Do ConcurInterim study of youth and family behavioral health prevention | Yes | Passed 63–37 |
| Apr 30, 2025 | SJ 48 | (H) 3rd Reading: Do ConcurInterim study of the public health and safety impacts of marijuana legalization | Yes | Passed 73–26 |
| Apr 30, 2025 | SJ 48 | (H) 2nd Reading: Do ConcurInterim study of the public health and safety impacts of marijuana legalization | Yes | Passed 73–26 |
| Apr 30, 2025 | SJ 46 | (H) 2nd Reading: Do ConcurInterim study of food security and agricultural prosperity | Yes | Failed 49–51 |
| Apr 30, 2025 | SJ 42 | (H) 3rd Reading: Do ConcurInterim study of noxious weed control | Yes | Passed 89–10 |
| Apr 30, 2025 | SJ 42 | (H) 2nd Reading: Do ConcurInterim study of noxious weed control | Yes | Passed 90–10 |
| Apr 30, 2025 | SJ 37 | (H) 3rd Reading: Do ConcurInterim survey of behavioral health services in Montana | Yes | Passed 78–22 |
| Apr 30, 2025 | SJ 36 | (H) 3rd Reading: Do ConcurStudy dependent neglect standards for prosecutors | Yes | Passed 82–18 |
| Apr 30, 2025 | SJ 35 | (H) 3rd Reading: Do ConcurInterim study of voter list maintenance and integrity | No | Passed 60–39 |
Show 15 more
| Date | Bill | Question | Their vote | Result |
|---|---|---|---|---|
| Apr 30, 2025 | SJ 35 | (H) 2nd Reading: Do ConcurInterim study of voter list maintenance and integrity | Yes | Passed 81–18 |
| Apr 30, 2025 | SB 524 | (H) 3rd Reading Conference Committee Report: Do AdoptRevise laws relating to category D assisted living facilities | Yes | Passed 93–7 |
| Apr 30, 2025 | SB 472 | (H) 3rd Reading Free Conference Committee Report: Do AdoptRevise penalties for violations under 310 permit process | Yes | Passed 98–2 |
| Apr 30, 2025 | SB 446 | (H) 3rd Reading Free Conference Committee Report: Do AdoptRevise laws related to healthcare utilization review | Yes | Passed 100–0 |
| Apr 30, 2025 | SB 40 | (H) 3rd Reading Free Conference Committee Report: Do AdoptRevise supreme court public records laws by opening deliberations and files t... | No | Passed 77–23 |
| Apr 30, 2025 | SB 324 | (H) 3rd Reading Conference Committee Report: Do AdoptRevise vehicle registration fees and allocate revenue for bridges and victims... | Yes | Passed 57–43 |
| Apr 30, 2025 | SB 324 | (H) 2nd Reading Conference Committee Report: Do ConcurRevise vehicle registration fees and allocate revenue for bridges and victims... | Yes | Passed 67–33 |
| Apr 30, 2025 | SB 319 | (H) 3rd Reading Conference Committee Report: Do AdoptGenerally revise health care laws related to doulas | Yes | Passed 54–46 |
| Apr 30, 2025 | HJ 34 | (H) 3rd Reading Senate Amendments: Do ConcurResolution supporting Montana's beef producers | Yes | Passed 98–2 |
| Apr 30, 2025 | HB 936 | (H) 3rd Reading Senate Amendments: Do ConcurAuthorize transfers and other necessary measures to implement HB 2-Section B | Yes | Passed 90–9 |
| Apr 30, 2025 | HB 935 | (H) 3rd Reading Senate Amendments: Do ConcurLimits to Fox Hills-Hell Creek aquifer withdrawals | Yes | Passed 100–0 |
| Apr 30, 2025 | HB 932 | (H) 3rd Reading Senate Amendments: Do ConcurGenerally revise conservation financing laws | Yes | Passed 88–12 |
| Apr 30, 2025 | HB 913 | (H) 3rd Reading Senate Amendments: Do ConcurAuthorize transfers and other necessary measures to implement HB2 Section D | Yes | Passed 91–9 |
| Apr 30, 2025 | HB 863 | (H) 3rd Reading Senate Amendments: Do ConcurGenerally revise state finance laws | Yes | Passed 55–45 |
| Apr 30, 2025 | HB 863 | (H) 2nd Reading Senate Amendments: Do ConcurGenerally revise state finance laws | Yes | Passed 59–41 |
From Montana's official records, checked Nov 13, 2026.