2018 Montana Senate election
An election was held on November 6, 2018, to elect 25 members to Montana's Senate. The election coincided with elections for other offices, including the U.S Senate, U.S. House of Representatives, and state house. The primary election was held on June 2, 2018.
Results summary
Close races
Districts where the margin of victory was under 10%:
- District 14, 1.48%
- District 12, 2.9%
- District 49, 3.18%
- District 32, 3.59% gain
- District 24, 7.98%
- District 30, 8.84%
- '''District 13, 9.26%'''
Open seats that changed parties
Detailed results
Districts 1–22
District 1
Incumbent Republican Chas Vincent had represented the 1st district since 2011. Vincent was term-limited and could not seek re-election.
District 4
Incumbent Republican Mark Blasdel had represented the 4th district since 2014.
District 5
Incumbent Republican Bob Keenan had represented the 4th district since 2015.
District 8
Incumbent Democrat Lea Whitford had represented the 8th district since 2015. Whitford did not seek re-election.
District 9
Incumbent Republican Llew Jones had represented the 9th district since 2011. Jones was term-limited and successfully ran for a seat in the state house.
District 11
Incumbent Republican Edward Buttrey had represented the 11th district and its predecessors since 2011. Buttrey was term-limited and successfully ran for a seat in the state house. State Representative Tom Jacobson, a Democrat, won the open seat.
District 12
Incumbent Democrat Carlie Boland had represented the 12th district since 2017.
District 13
Incumbent Republican Brian Hoven had represented the 13th district since 2015.
District 14
Incumbent Republican Russel Tempel had represented the 14th district since 2017.
District 19
Incumbent Republican Eric Moore had represented the 19th district and its predecessors since 2011. Moore was term-limited and successfully ran for a seat in the state house.
District 20
Incumbent Republican Duane Ankney had represented the 20th district since 2015.
District 22
Incumbent Republican Douglas Kary had represented the 22nd district since 2015.
Districts 24–50
District 24
Incumbent Democrat Mary McNally had represented the 24th district since 2015.
District 27
Incumbent Republican Cary Smith had represented the 27th district since 2015.
District 29
Incumbent Republican David Howard had represented the 29th district since 2015.
District 30
Incumbent Republican Nels Swandal had represented the 30th district since 2015. Swandal did not seek re-election.
District 32
Incumbent Republican Jedediah Hinkle had represented the 32nd district since 2014. He lost re-election to Democrat Pat Flowers.
District 33
Incumbent Democrat Jennifer Pomnichowski had represented the 33rd district since 2015.
District 34
Incumbent Republican Gordon Vance had represented the 34th district since 2015.
District 41
Incumbent Democrat Mary Caferro had represented the 41st district and its predecessors since 2011. Caferro was term-limited and successfully ran for a seat in the state house. State representative Janet Ellis won the open seat.
District 42
Incumbent Democrat Jill Cohenour had represented the 43rd district since 2015.
District 43
Incumbent Republican Pat Connell had represented the 43rd district since 2015. Connell lost re-nomination to fellow Republican Jason Ellsworth.
District 48
Incumbent Democrat Nate McConnell had represented the 48th district since 2018.
District 49
Incumbent Democrat Diane Sands had represented the 49th district since 2015.
District 50
Incumbent Democrat Tom Facey had represented the 50th district and its predecessors since 2011. Facey was term-limited and could not seek re-election. State Representative Bryce Bennett won the open seat.