Slade Gorton won with 54.2% of the vote (936,317 votes), ahead of Warren G. Magnuson with 45.8% (792,052 votes).
The margin between the first two candidates was 8.3 percentage points (144,265 votes). The party margin (Republican share minus Democratic share) was a Republican lead of 8.3 points.
Compared with the previous comparable race in the same area, the party margin moved 55.9 points toward Republicans. The winning party changed.
1,728,369 votes were counted in this race, for 2 candidates or options.
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