Maria Cantwell won with 48.7% of the vote (1,199,437 votes), ahead of Slade Gorton with 48.6% (1,197,208 votes).
The margin between the first two candidates was 0.1 percentage points (2,229 votes). The party margin (Republican share minus Democratic share) was a Democratic lead of 0.1 points.
Compared with the previous comparable race in the same area, the party margin moved 16.7 points toward Republicans.
2,461,379 votes were counted in this race, for 3 candidates or options.
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