Maria Cantwell won with 58.4% of the vote (1,803,364 votes), ahead of Susan Hutchison with 41.6% (1,282,804 votes).
The margin between the first two candidates was 16.9 percentage points (520,560 votes). The party margin (Republican share minus Democratic share) was a Democratic lead of 16.9 points.
Compared with the previous comparable race in the same area, the party margin moved 1.2 points toward Republicans.
3,086,168 votes were counted in this race, for 2 candidates or options.
More races: all races, candidates and analysis.