Montana State Senate seat · lines in effect since 2024
Montana Senate District 37
A district of about 18,000 people, 26% of adults with a bachelor's degree. It votes D+10.5 relative to the nation for president.
2024 election
Nov 5, 2024- Derek Harvey (D) · won59.8%
- Jim Kephart (R)40.2%
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 12:13 PM ET
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 election for this seat
14 races since 1974. District numbers are redrawn after each census: each group is one set of lines.
| Year | Winner | Runner-up | Won by |
|---|---|---|---|
| Lines first used in 2024 | |||
| 2024 | Derek Harvey (D) | Jim Kephart (R) | 19.6 |
| Lines first used in 2012 | |||
| 2020 | Ryan Lynch (D) | Aaron Meaders (R) | 29.6 |
| 2016 | Jon C. Sesso (D) | — | Unopposed |
| 2012 | Jon C. Sesso (D) | Daniel Oneill (R) | 19.0 |
| Lines first used in 2002 | |||
| 2008 | Steven J. Gallus (D) | Robert Dwyer (R) | 39.8 |
| 2004 | Steven J. Gallus (D) | — | Unopposed |
| Lines first used in 1992 | |||
| 2000 | Mike Taylor (R) | — | Unopposed |
| 1996 | Mike Taylor (R) | Debbie Demarais (D) | 17.8 |
| 1992 | Charles Swysgood (R) | John S. Kirkley (D) | 36.7 |
| Lines first used in 1982 | |||
| 1988 | John H. Anderson (R) | Bill Hand (D) | 10.3 |
| 1984 | John H. Anderson (R) | Donald L. Walters (D) | 32.0 |
| 1982 | Pete Story (R) | Donald C. Voges (D) | 10.0 |
| Lines first used in 1972 | |||
| 1978 | Pete Story (R) | Richard C. Parks (D) | 16.9 |
| 1974 | Pete Story (R) | Richard C. Parks (D) | 13.4 |
Won by: the winner's lead over the runner-up, in points of the vote. Source: 99chambers results archive (MEDSL, Klarner, state election offices)
Districts that overlap District 37
The state's districts in other chambers that share residents with this one, and the share of District 37's area in each.
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 | |
|---|---|---|---|---|
| President | D+15.0 | No race | D+15.6 | D+8.4 |
| U.S. Senate | No race | D+46.3 | D+31.2 | D+32.2 |
| Governor | D+44.9 | No race | No race | D+12.6 |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: civicAPIUpdated Nov 8, 2026, 7:01 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 37.
Lower than 76% of seats.
Higher than 84% of seats.
Higher than 88% of seats.
Lower than 88% of seats.
Lower than 69% of seats.
Denser than 65% 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 4629% college gradsD+13.8Not up in 2026District 24
27% college gradsR+4.6Not up in 2026District 36
25% college gradsD+8.2Not up in 2026District 41
35% college gradsD+5.6Held D
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