Tom Cotton won with 56.5% of the vote (478,819 votes), ahead of Mark L. Pryor with 39.4% (334,174 votes).
The margin between the first two candidates was 17.1 percentage points (144,645 votes). The party margin (Republican share minus Democratic share) was a Republican lead of 17.1 points.
Compared with the previous comparable race in the same area, the party margin moved 3.9 points toward Democrats.
847,505 votes were counted in this race, for 4 candidates or options.
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