John R. Thune won with 71.8% of the vote (265,516 votes), ahead of Jay Williams with 28.2% (104,140 votes).
The margin between the first two candidates was 43.7 percentage points (161,376 votes). The party margin (Republican share minus Democratic share) was a Republican lead of 43.7 points.
Compared with the previous comparable race in the same area, the party margin moved 22.8 points toward Republicans.
369,656 votes were counted in this race, for 2 candidates or options.
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