Montana's at-large congressional district

It had previously been represented by Republican Greg Gianforte, who did not seek re-election in 2020.

President George W. Bush won Montana in the 2004 presidential election with 59.1% of the vote, beating John Kerry by 20 percentage points, which indicates that the district leans Republican.

However, four years later John McCain won the state by only 2.5% over Barack Obama, and there is a significant Democratic presence in the state: as of 2021 one U.S. Senate seat is held by a Democrat, which suggested at the time that the district could be competitive in future elections.

[3][further explanation needed] From statehood in 1889, until the creation of geographic districts in 1919, Montana was represented in the United States House of Representatives by members elected at-large, that is, requiring voting by all the state population.

After that time, two representatives were elected from two geographic districts of roughly equal population, from the east and the west of the state.