Editor’s note: Reporting is based on unofficial data and is accurate as of 6:00 p.m., Nov. 7.
Republican Dave McCormick defeated incumbent Democratic Senator Bob Casey Jr., according to the Associated Press.
McCormick won with 49.0% of the vote with Casey trailing at 48.5%. Roughly 99% of reporting is complete and the race was called by the Associated Press. Casey’s tally trails by about 32,000 votes.
Slippery Rock and Butler County results
Slippery Rock Borough residents chose McCormick with 51.35% of the vote, tallying 628 votes. Casey trailed at 45.78% of the vote, tallying 558 votes. 1,219 votes were cast in the borough.
Slippery Rock Township residents also voted for McCormick, according to Butler County’s official website. McCormick won 60.63%, or 1,340, of the township votes. Casey received 36.88%, or 572, of the votes. 2,226 votes were cast in the township.
Butler County followed suit and overwhelmingly voted for McCormick, nearly matching the Slippery Rock Township results at 64% for McCormick and 34% for Casey.
Voting tendencies and variations
Pennsylvania’s senate race saw some key differences in the counties of Erie, Monroe and Bucks. All three counties chose Casey as their next senator but chose Trump as their next president. Trump won Bucks County on a margin of around 500 votes.
Casey won six out of the ten most populous counties in Pennsylvania by significant margins ranging from 12 to 60-point gaps. The Democratic strongholds expected to vote in favor of Casey did so in large majorities with the exception of Bucks County. Casey won the county by only half of a percentage point.
McCormick claimed the latter half of the ten most populous counties with margins ranging from Berks County at ten points to Westmoreland at 25 points. McCormick won nearly all the rural vote, including every county with a population of 75,000 or less, equating to 44 counties.
