Montana State Senate seat · lines in effect since 2024
Montana Senate District 1
A district of about 23,000 people, 19% of adults with a bachelor's degree. It votes R+55.3 relative to the nation for president.
Where it sits among all 50 seats
Every Montana State Senate seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.
Democratic
Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Every race on these lines
Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.
| 2016 | 2018 | 2020 | 2024 | 2026 | |
|---|---|---|---|---|---|
| U.S. Senate | No race | R+36.2 | R+46.4 | R+42.3 | No race |
| Governor | R+27.3 | No race | No race | R+52.6 | No race |
| Montana State Senate | No race | No race | No race | No race | R+51.3 |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: Montana Secretary of StateUpdated Nov 7, 2026, 3:01 PM ET
Who lives here, compared
Grey bars show the spread of all 50 seats. Small marks are other seats in Montana. The black marker is District 1.
Lowest of 50 seats.
Highest of 50 seats.
Lower than 86% of seats.
Lower than 92% of seats.
Lower than 80% of seats.
Less dense than 73% of seats.
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET
Seats most like this one
Nearest seats on demographics, density and lean.
District 3926% college gradsR+56.4Not up in 2026District 17
23% college gradsR+69.1Not up in 2026District 19
27% college gradsR+61.1Held RDistrict 18
24% college gradsR+56.9Held R
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Who has held it
These lines took effect in 2024.
- Steve Gunderson (R)
2027– · Won 2026 by 51.3
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)