The Associated Press called the race for one of Pennsylvania's two Senate seats on Wednesday, saying that Republican upstart David McCormick had defeated incumbent Sen. Bob Casey. The long-serving Sen. Casey had held his seat in the upper chamber since 2007.

Pennsylvania Sen. Bob Casey is in denial after losing his race for a fourth term to Republican Senator-elect Dave McCormick, and clinging to a long-shot gamble that that outstanding ballots from Philadelphia can make up the roughly 36,

Republican Dave McCormick expressed gratitude and thanked Pennsylvanians on Friday morning after media outlets projected his victory in Pennsylvania’s U.S. Senate race over three-term incumbent U.S. Senator Bob Casey (D).