Steve Bullock won with 50.2% of the vote (255,933 votes), ahead of Greg Gianforte with 46.4% (236,115 votes).
The margin between the first two candidates was 3.9 percentage points (19,818 votes). The party margin (Republican share minus Democratic share) was a Democratic lead of 3.9 points.
509,360 votes were counted in this race, for 3 candidates or options.
More races: all races, candidates and analysis.