Dave McCormick, a finance executive and former Army officer, is the new senator-elect for Pennsylvania. McCormick, a Republican, defeated incumbent Democrat Bob Casey, who held the seat for nearly two decades. McCormick has a background in both business ...

Republican Dave McCormick will defeat Pennsylvania Sen. Bob Casey, CNN projects, boosting the GOP majority in the Senate next year.

Pa., conceded to Republican Dave McCormick on Thursday, formally ending his reelection bid and acknowledging defeat two weeks after the Associated Press declared McCormick’s victory and after a statewide recount of the race had already been triggered.