Republican David McCormick defeated three-term Democratic Sen. Bob Casey in Pennsylvania, the Associated Press projected, ...

Republican David McCormick cut into Democratic Sen. Bob Casey’s support in Philadelphia and its populous suburbs and built ...

Republican David McCormick has won Pennsylvania’s pivotal U.S. Senate seat, beating three-term Democratic Sen. Bob Casey ...

Pennsylvania's U.S. Senate contest between Democratic incumbent Bob Casey and Republican challenger David McCormick was still ...

Pennsylvania’s U.S. Senate race between three-term Democratic Sen. Bob Casey and Republican challenger David McCormick will ...

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

(AP Photo/Matt Rourke) Republican Pennsylvania Senate candidate David McCormick, left ... The son of a popular two-term governor, he served in statewide elected office as auditor general and ...

(AP) — Republican David McCormick has won Pennsylvania ... Casey is the namesake of a former two-term governor and Pennsylvania’s longest-serving Democrat ever in the Senate.

WASHINGTON (AP) — Republican David McCormick cut ... ex-hedge fund CEO. Pennsylvania Democrats have found success against GOP rivals in the recent Senate and governor's races.