It resulted in voters selecting Greg Gianforte over Mike Cooney.

Incumbent Democratic governor Steve Bullock was term-limited and could not seek a third consecutive term in office, and he ran unsuccessfully for Montana's Class II Senate seat.

[2] Bullock's lieutenant governor, Mike Cooney, was the Democratic nominee, while the Republican nominee was Montana's at-large representative Greg Gianforte, who won the election, making him the first Republican governor of Montana since Judy Martz left office in 2005.

This election marked the first time since the 1920s that Republicans controlled all state constitutional offices and a majority of the Legislature.

Statewide and local politicians Federal politicians Organizations U.S. Presidents Individuals Organizations with Mike Cooney, Tim Fox, Greg Gianforte, Albert Olszewski, Ron Vandevender and Whitney Williams with Mike Cooney, Tim Fox, Greg Gianforte, Reilly Neill, Albert Olszewski, Gary Perry, Casey Schreiner and Whitney Williams with Tim Fox, Matt Rosendale, Corey Stapleton, Kathleen Williams and Whitney Williams Kristen Juras Republican Casey Schreiner Democratic John Nesper Libertarian votes Counties that flipped from Democratic to Republican Partisan clients Official campaign websites