Republican Dave McCormick won the U.S. Senate election in Pennsylvania, Decision Desk HQ projected on Thursday, beating Democratic incumbent Bob Casey in an important win for Republicans hoping to capture a majority in the chamber.

Unofficial returns in the race between Senator Bob Casey and Dave McCormick have triggered a mandatory recount under state law.

The tight margin in the Senate race between Sen. Bob Casey, D-Pennsylvania and Republican Sen.-elect Dave McCormick has triggered an automatic recount under Pennsylvania law.

Dabe McCormick's staffers say the legal dispute will have no bearing on the outcome of the U.S. Senate race against incumbent Bob Casey,

The Pennsylvania Senate race is heading for a recount as Republican Dave McCormick continues to lead Sen. Bob Casey (R-Pa.) in what would be a crucial win for the GOP. Secretary of the Commonwealth Al Schmidt made the announcement on Wednesday.

Republican David McCormick is projected to defeat Democratic Sen. Bob Casey in Pennsylvania's U.S. Senate race.

Pennsylvania's Senate race is going to a mandatory recount despite the Associated Press calling it last week for Republican challenger Dave McCormick. McCormick leads incumbent Bob Casey by less than 30,