According to unofficial results, Republican Dave McCormick leads incumbent Democrat Bob Casey by roughly 16,000 votes. "That is a staggeringly close number considering that 36,604 Philadelphians chose to undervote the race," said Philadelphia Commissioner Lisa M Deeley (D), meaning they voted for President but skipped over the Senate race.

On This Week in Pennsylvania, we recap Pennsylvania’s U.S. Senate race after incumbent Bob Casey conceded the race to Dave McCormick more than two weeks after Election Day. The race came down to about 16,

Pennsylvania Secretary of the Commonwealth Al Schmidt has ordered counties to halt recounting ballots in Pennsylvania’s U.S. Senate race. The order comes a day after incumbent U.S. Senator Bob Casey conceded the race to Republican Dave McCormick.