Elections to the Montana House of Representatives were held on November 3, 2020.
Predictions
Results summary
Incumbents defeated in primary election
David Dunn (R-District 9), defeated by Brian Putnam (R) Joel Krautter (R-District 35), defeated by Brandon Ler (R) Frederick Moore (R-District 37), defeated by Jerry Schillinger (R) Bruce Grubbs (R-District 68), defeated by Caleb Hinkle (R) Greg DeVries (R-District 75), defeated by Marta Bertoglio (R)
Incumbents defeated in general election
Debo Powers (D-District 3), defeated by Braxton Mitchell (R) Brad Hamlett (D-District 23), defeated by Scot Kerns (R) Barbara Bessette (D-District 24), defeated by Steven Galloway (R) Jasmine Krotkov (D-District 25), defeated by Steve Gist (R) Jade Bahr (D-District 50), defeated by Mallerie Stromswold (R)
Open seats that changed parties
Casey Schreiner (D-District 26) ran for Lieutenant Governor, seat won by Jeremy Trebas (R) Jacob Bachmeier (D-District 28) didn't seek re-election, seat won by Ed Hill (R) Gordon Pierson (D-District 78) was term-limited and couldn't seek re-election, seat won by Gregory Frazer (R) Tom Winter (D-District 96) ran for the U.S House, seat won by Kathy Whitman (R)
Close races
Districts where the margin of victory was under 10%: District 96, 2.62% gain District 23, 2.64% gain District 25, 3.27% gain District 28, 3.68% gain District 48, 5.52% District 50, 5.62% gain District 77, 5.66% District 26, 5.72% gain District 51, 6.44% District 24, 6.9% gain District 94, 6.98% District 84, 7.2% District 83, 8.72% District 78, 8.98% gain
Detailed results
Districts 1-20
District 1
Incumbent Republican Steve Gunderson has represented the 1st District since 2017.
District 2
Incumbent Republican Neil Duram has represented the 2nd district since 2019.
District 3
Incumbent Democrat Debo Powers has represented the 3rd district since her appointment on November 5, 2019. Powers lost re-election to Republican Braxton Mitchell.
District 4
Incumbent Republican Matt Regier has represented the 4th district since 2017.
District 5
Incumbent Democrat Dave Fern has represented the 5th district since 2017.
District 6
Incumbent Republican Carl Glimm has represented the 6th district since 2013. Glimm was term-limited and successfully ran for the Montana Senate. Republican Amy Regier won the open seat.
District 7
Incumbent Republican Frank Garner has represented the 7th district since 2015.
District 8
Incumbent Republican John Fuller has represented the 8th district since 2019.
District 9
Incumbent Republican David Dunn has represented the 9th district since 2019. Dunn lost re-nomination to fellow Republican Brian Putnam. Putnam won the general election.
District 10
Incumbent Republican Mark Noland has represented the 10th district since 2015.
District 11
Incumbent Republican Derek Skees has represented the 11th district since 2017.
District 12
Incumbent Republican House Speaker Greg Hertz has represented the 12th district since 2015. Hertz ran successfully for the Montana Senate and fellow Republican Linda Reksten won the open seat.
District 13
Incumbent Republican Bob Brown has represented the 13th district since 2015. Brown ran for the Montana Senate and fellow Republican Paul Fielder won the open seat.
District 14
Incumbent Republican Denley Loge has represented the 14th district since 2017.
District 15
Incumbent Democrat Marvin Weatherwax Jr. has represented the 15th district since 2019.
District 16
Incumbent Democrat Tyson Runningwolf has represented the 16th district since 2019.
District 17
Incumbent Republican Ross Fitzgerald has represented the 17th district since 2017.
District 18
Incumbent Republican Llew Jones has represented the 18th district since 2019.
District 19
Incumbent Republican Wendy McKamey has represented the 19th district since 2017.
District 20
Incumbent Republican Fred Anderson has represented the 20th district since 2017.
Districts 21-40
District 21
Incumbent Republican Ed Buttrey has represented the 21st district since 2019.
District 22
Incumbent Republican Lola Sheldon-Galloway has represented the 22nd district since 2017.
District 23
Incumbent Democrat Brad Hamlett has represented the 23rd district since 2017. He lost re-election to Republican Scot Kerns.