The first candidates ran in the 2022 elections for a seat in the 118th United States Congress.

After 1919, however, the state was divided into geographical districts, with the 1st district covering the western part of the state, including Missoula, Great Falls, Butte, and Helena.

Following the release of the 2020 United States census results, Montana was once again split into two congressional districts.

[3] The reconstituted 1st district covers the western third of the state, in a configuration similar to the 1983–1993 map.

Missoula, home of the University of Montana, and Butte are longstanding Democratic bastions, while Bozeman, home to Montana State University, is more of a swing area.