IncumbentSteve Daines Republican
General election
- Alani Bankhead Democrat
Air Force lieutenant colonel and leadership coach
- Kurt Alme Republican
former U.S. Attorney for the District of Montana (2017–2020, 2025–2026)
- Kyle Austin Libertarian
pharmacist and Republican candidate for in 2022 and 2024
- Seth Bodnar Independent
former president of the University of Montana (2018–2026)
Democratic primary
Air Force lieutenant colonel and leadership coach
arts administrator
tribal historic preservation officer at Fort Belknap Indian Community
retired remodeling contractor and candidate for U.S. Senate in 2024
former state representative from the 62nd district (2013–2015)
Republican primary
former U.S. Attorney for the District of Montana (2017–2020, 2025–2026)
candidate for U.S. Senate in 2024
mechanical engineer
Libertarian primary
pharmacist and Republican candidate for in 2022 and 2024
aviation professional