2020 Montana House Election Interactive Map

All US House seats to be contested in 2020

Montana has one at-large congressional district. It is one of 7 states with a single representative in the U.S. House. The seat is held by Republican Greg Gianforte, who is running for governor. Despite the lack of an incumbent, the seat is likely to stay in GOP control.

2020 may be the final election with this map, as Montana is expected to gain a district after the next Census. If that happens, redistricting will occur in 2021 to split the state into two districts. These will be first contested in the 2022 election.

To create and share your own forecast, visit the 2020 House Interactive Map.


Hover over a district for details.

District Incumbent Party Since Term Predictions Margin of Victory
Pro Map House(a) President(b)
MT-AL Greg Gianforte
2017 2nd
4.6% 20.6%
Incumbent not running for re-election in 2020.
Kathleen Williams
Matt Rosendale

(a)Source: Daily Kos, 270toWin research. The margin is the percentage difference between the top two vote-getters in 2018.
More recent results (i.e., special elections held in 2019-20 for vacancies) are not displayed.
† Race was uncontested | ^Top two vote-getters were from the same party

(b)Source: Daily Kos. The margin is the percentage difference between Donald Trump and Hillary Clinton.