Mike Rounds won with 50.4% of the vote (140,741 votes), ahead of Rick Weiland with 29.5% (82,456 votes).
The margin between the first two candidates was 20.9 percentage points (58,285 votes). The party margin (Republican share minus Democratic share) was a Republican lead of 20.9 points.
Compared with the previous comparable race in the same area, the party margin moved 79.1 points toward Democrats.
279,412 votes were counted in this race, for 4 candidates or options.
More races: all races, candidates and analysis.