Mary Ann Dunwell
Montana State Senator, District 42 since 2022. Ran in 6 elections between 2014 and 2022, winning 5. Re-elected in 2026. Next on the ballot in 2030.
- In office
- 3 yrs
- Since 2022
- Bills became law
- 0
- 9 sponsored, 2025–2026 session
- Votes missed
- 0.1%
- Chamber median 0.5%
- With party
- 96%
- On votes splitting the parties
- Last margin
- +1.1
- Won 2026
- Next election
- 2030
- Nov 5, 2030
Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Oct 27, 2026, 1:51 PM ET
Committees
As of 2026-10.
- Highways and Transportation · vice chair
- Agriculture, Livestock and Irrigation
- Civil Rights Violations and Censorship by Montana University System Interim
- Legislative Administration
- Local Government Interim
- Taxation
Source: Open States committeesUpdated Oct 27, 2026, 9:43 AM ET
Legislation
No bills in this list for the 2025–2026 session.
Source: Open States billsUpdated Nov 6, 2026, 4:22 PM ET
Voting record
Where Dunwell sits in the Montana State Senate
Dunwell is closer to the center than 6% of the chamber's Democrats.
Closest: Jacinda Morigeau, Susan Webber, Andrea Olsen
Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 4:55 PM ET
With Dunwell’s party
- Votes with the chamber's Democrats96%
Black tick: the average of Democrats in the Montana State Senate.
Source: 99chambers legislative scores from roll calls and cosponsorships
Key votes
Votes chosen for their effect, not their side: Dunwell’s vote, each party’s majority, and the result. An orange vote differs from most Democrats.
| Date | Bill | Dunwell | Dem. majority | Rep. majority | Result |
|---|---|---|---|---|---|
| Apr 23, 2025 | HB 860: Provide for veterinary training loan program | Yes | Yes | Yes | Passed 41–9 |
| Apr 23, 2025 | HB 129: Provide income tax benefit to support emergency response volunteers | Yes | Yes | No | Passed 28–22 |
| Apr 23, 2025 | HB 853: Revise fees for licensed establishments | Yes | Yes | No | Passed 29–21 |
Source: 99chambers key votes from Congress.gov, Voteview and Open States roll calls
Career
Offices held, and every time Dunwell was on a ballot. Filled marks are general elections won; hollow marks are primaries; an orange outline is a loss.
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 | Montana State Senate, District 42 | Won | D+1.1 | R+13.5 | +14.6 |
| 2022 | Montana State Senate, District 42 | Won | D+10.6 | D+3.8 | +6.8 |
| 2020 | Montana House of Representatives, District 84 | Lost | R+59.5 | R+3.4 | −56.1 |
| 2018 | Montana House of Representatives, District 84 | Won | — | R+3.4 | — |
| 2016 | Montana House of Representatives, District 84 | Won | D+2.4 | R+3.4 | +5.8 |
| 2014 | Montana House of Representatives, District 84 | Won | D+0.6 | — | — |
| 2014 | Montana House of Representatives, District 84 (primary) | Won | — | — | — |
Source: 99chambers results archive; 2026: Montana Secretary of State (unofficial)Updated Nov 8, 2026, 7:01 PM ET
Campaign money, 2025–26
- Raised
- $79.2K
- Spent
- $72K
Source: Montana Commissioner of Political Practices filings through Oct 15, 2026Updated Nov 1, 2026, 9:16 AM ET
Campaign committees
Open committees can still raise and spend money.
| Dunwell, Mary Ann State | Active |
Source: Montana Commissioner of Political Practices filings through Oct 15, 2026Updated Nov 1, 2026, 9:16 AM ET
Seats Dunwell has held
- Montana State Senate, District 42 · since 2022
- Montana House of Representatives, District 84 · 2014–2020
Source: 99chambers results archive
Who Dunwell has run against
- Stephen Lapraim (R) · 2026 election, won
- Matt Olson (R) · 2022 election, won
- Charlie Hull (R) · 2020 election, lost
- Steve Gibson (R) · 2016 election, won
Source: 99chambers results archive; 2026: Montana Secretary of State (unofficial)
How we know Dunwell
One person, matched across every source we use.
- Open States ocd-person/3e82bb94-a815-40d2-b125-b9884517b1c3
- Wikidata Q36996378
Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Oct 27, 2026, 1:51 PM ET