Robert P. Casey Jr. won with 55.6% of the vote (2,777,680 votes), ahead of Louis J. Barletta with 42.7% (2,134,848 votes).
The margin between the first two candidates was 12.9 percentage points (642,832 votes). The party margin (Republican share minus Democratic share) was a Democratic lead of 12.9 points.
Compared with the previous comparable race in the same area, the party margin moved 14.3 points toward Democrats. The winning party changed.
4,994,643 votes were counted in this race, for 4 candidates or options.
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