Maria Cantwell won with 56.9% of the vote (1,184,659 votes), ahead of Mike McGavick with 39.9% (832,106 votes).
The margin between the first two candidates was 16.9 percentage points (352,553 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 4.7 points toward Democrats.
2,083,734 votes were counted in this race, for 5 candidates or options.
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