Dennis Lenz
Montana State Senator, District 25 since 2022. Ran in 8 elections between 2010 and 2022, winning 6. Re-elected in 2026. Next on the ballot in 2030.
- In office
- 3 yrs
- Since 2022
- Bills became law
- 13
- 48 sponsored, 2025–2026 session
- Votes missed
- 0.4%
- Chamber median 0.5%
- With party
- 95%
- On votes splitting the parties
- Last margin
- +14.1
- 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.
- Health and Human Services Interim Budget · vice chair
- Public Health, Welfare and Safety · chair
- Agriculture, Livestock and Irrigation
- Children, Families, Health and Human Services Interim
- Committee on Committees
- Finance and Claims
- Rules
- Rules
- Transition Review Interim
Source: Open States committeesUpdated Oct 27, 2026, 9:43 AM ET
Legislation
Courts · Became law May 2025
Courts · Became law May 2025
Family Law · Became law May 2025
Health · Became law May 2025
Source: Open States billsUpdated Nov 6, 2026, 4:22 PM ET
Voting record
Where Lenz sits in the Montana State Senate
Lenz is closer to the center than 25% of the chamber's Republicans.
Closest: Matt Regier, Bob Phalen, Theresa Manzella
Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 4:55 PM ET
With Lenz’s party
- Votes with the chamber's Republicans95%
Black tick: the average of Republicans in the Montana State Senate.
Source: 99chambers legislative scores from roll calls and cosponsorships
Key votes
Votes chosen for their effect, not their side: Lenz’s vote, each party’s majority, and the result. An orange vote differs from most Republicans.
| Date | Bill | Lenz | Rep. majority | Dem. majority | Result |
|---|---|---|---|---|---|
| Apr 23, 2025 | HB 860: Provide for veterinary training loan program | No | Yes | Yes | Passed 41–9 |
| Apr 23, 2025 | HB 129: Provide income tax benefit to support emergency response volunteers | No | No | Yes | Passed 28–22 |
| Apr 23, 2025 | HB 853: Revise fees for licensed establishments | No | No | Yes | Passed 29–21 |
Source: 99chambers key votes from Congress.gov, Voteview and Open States roll calls
Career
Offices held, and every time Lenz 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 25 | Won | R+14.1 | R+24.9 | −10.8 |
| 2022 | Montana State Senate, District 27 | Won | — | R+34.4 | — |
| 2020 | Montana House of Representatives, District 53 | Won | — | R+44.9 | — |
| 2018 | Montana House of Representatives, District 53 | Won | R+44.1 | R+44.9 | −0.8 |
| 2016 | Montana House of Representatives, District 53 | Won | R+54.3 | R+44.9 | +9.4 |
| 2014 | Montana House of Representatives, District 48 | Lost | D+4.7 | — | — |
| 2014 | Montana House of Representatives, District 48 (primary) | Won | — | — | — |
| 2012 | Montana House of Representatives, District 50 | Won | R+9.4 | — | — |
| 2010 | Montana House of Representatives, District 54 | Lost | D+1.9 | — | — |
Source: 99chambers results archive; 2026: Montana Secretary of State (unofficial)Updated Nov 8, 2026, 7:01 PM ET
Campaign money, 2025–26
- Raised
- $33K
- Spent
- $38.3K
Source: Montana Commissioner of Political Practices filings through Oct 7, 2026Updated Nov 1, 2026, 9:16 AM ET
Campaign committees
Open committees can still raise and spend money.
| Lenz, Dennis State | Active |
Source: Montana Commissioner of Political Practices filings through Oct 7, 2026Updated Nov 1, 2026, 9:16 AM ET
Seats Lenz has held
- Montana State Senate, District 27 · since 2022
- Montana House of Representatives, District 53 · 2016–2022
- Montana House of Representatives, District 50 · 2012–2014
Source: 99chambers results archive
Who Lenz has run against
- Julie Hippler (D) · 2026 election, won
- Clementine Lindley (D) · 2018 election, won
- Jordan Matney (D) · 2016 election, won
- Jessica L. Karjala (D) · 2014 election, lost
- Deborah D. Willis (D) · 2012 election, won
- Margie Macdonald (D) · 2010 election, lost
Source: 99chambers results archive; 2026: Montana Secretary of State (unofficial)
How we know Lenz
One person, matched across every source we use.
- Open States ocd-person/0fd1ad64-349c-42d9-ae46-4ff7d3eb9495
- Wikidata Q64740176
Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Oct 27, 2026, 1:51 PM ET