2018 Montana U.S. House At-large Election

Montana · 3 candidates · See every 2018 U.S. House race

Who won the 2018 Montana U.S. House At-large Election?

Greg Gianforte won the 2018 Montana U.S. House At-large Election. Greg Gianforte received 256,661 popular votes (50.88%). The main challenger was Kathleen Williams (46.25%).

See the full head-to-head between Gianforte and Williams

Gianforte +4.6 pts · won by 23,377 votes

Greg Gianforte RepublicanWINNER50.88%

256,661 votes

Kathleen Williams Democratic46.25%

233,284 votes

Elinor SwansonLibertarian2.87%

14,476 votes

Popular-vote totals for U.S. House elections come from the MIT Election Data and Science Lab (1976–2024).

Data last verified July 28, 2026.