Republican David McCormick has won the Pennsylvania Senate race, defeating the Democratic incumbent Sen. Bob Casey, according to a race call by the Associated Press.

Republican David McCormick declared victory Friday morning in his tight U.S. Senate race against incumbent Democrat Sen. Bob Casey, who has yet to concede.

Republican David McCormick has won the Pennsylvania Senate race, defeating the Democratic incumbent Sen. Bob Casey, according to a race call by the Associated Press. Casey and McCormick waged one ...

With McCormick's victory, Republicans have expanded their Senate majority in the next Congress to 53 seats, with two races still to be called. David McCormick ousts Democratic incumbent Bob Casey ...

Republican David McCormick has won the Pennsylvania Senate race, defeating the Democratic incumbent Sen. Bob Casey, according to a race call by the Associated Press.

Republican David McCormick has won the Pennsylvania Senate race, defeating the Democratic incumbent Sen. Bob Casey, according to a race call by the Associated Press.

With McCormick's victory, Republicans have expanded their Senate majority in the next Congress to 53 seats, with two races still to be called.