State Auditor Matt Rosendale (R) defeated five other candidates including, Secretary of State Corey Stapleton (R), to win the Republican nomination for Montana’s at-large U.S. House seat. Rosendale received 48.4% of the vote to Stapleton’s 33.2% with 94% of precincts reporting. None of the other four candidates—Joe Dooling, John Evankovich, Debra Lamm, or Mark McGinley—received over 10% of the vote.
Rosendale will face Kathleen Williams (D) in the general election. The national branches of both major parties have targeted this open seat. The current officeholder, Greg Gianforte, won the Republican nomination for governor.