2018 general · November 6, 2018
2018 Montana State Senate election results, district by district
Every Montana State Senate district in the 2018 general election: winners, margins, unopposed seats and seats that changed party.
Seats after the election
Republicans controlled the chamber · 50 seats
After the electionD 20 · R 30
Races25
Changed party0
Unopposed16%4 races
Incumbents defeated1
Every district
D 11 · R 14
| Race | Winner | Won by | Notes |
|---|---|---|---|
| SD-1 | Mike Cuffe (R) | 66.3 | |
| SD-4 | Mark W. Blasdel (R) | 29.0 | |
| SD-5 | Bob Keenan (R) | Unopposed | |
| SD-8 | Susan Webber (D) | Unopposed | |
| SD-9 | Butch Gillespie (R) | 46.5 | |
| SD-11 | Tom Jacobson (D) | 15.0 | |
| SD-12 | Carlie Boland (D) | 2.9 | |
| SD-13 | Brian Hoven (R) | 9.3 | |
| SD-14 | Russel Tempel (R) | 1.5 | |
| SD-19 | Ken Bogner (R) | 61.7 | |
| SD-20 | Duane Ankney (R) | Unopposed | |
| SD-22 | Douglas Kary (R) | 20.9 | |
| SD-24 | Mary McNally (D) | 8.0 | |
| SD-27 | Cary Smith (R) | 36.2 | |
| SD-29 | David Howard (R) | 33.7 | |
| SD-30 | John Esp (R) | 8.8 | |
| SD-32 | Pat Flowers (D) | 3.6 | Incumbent lost |
| SD-33 | Jennifer Pomnichowski (D) | Unopposed | |
| SD-34 | Gordon Vance (R) | 29.6 | |
| SD-41 | Janet Ellis (D) | 15.5 | |
| SD-42 | Jill Cohenour (D) | 14.1 | |
| SD-43 | Jason Ellsworth (R) | 24.1 | |
| SD-48 | Nate McConnell (D) | 25.5 | |
| SD-49 | Diane Sands (D) | 3.2 | |
| SD-50 | Bryce Bennett (D) | 44.4 |
Montana State Senate
Results are each source's final count; margins are the winner's lead over the runner-up in points of the vote. Source: MIT Election Data and Science Lab