The Pennsylvania Senate race between Democratic incumbent Bob Casey and Republican challenger Dave McCormick is headed for a ...

The Associated Press says Republican Dave McCormick has unseated Sen. Bob Casey, winning a Pennsylvania U.S. Senate seat that ...

Republican Dave McCormick defeated incumbent Democratic Sen. Bob Casey in Pennsylvania’s Senate race, The Associated Press ...

Republican David McCormick won a Senate seat in Pennsylvania on Thursday, defeating Democratic Sen. Bob Casey and padding the GOP's Senate majority. McCormick, 59, is a two-time Senate challenger and ...

Republican David McCormick won a Senate seat in Pennsylvania ... his fourth term and is perhaps Pennsylvania’s best-known politician, the son of a former two-term governor and Pennsylvania ...

Republican Dave McCormick, an Army veteran and former hedge fund CEO, has unseated three-term Democratic Sen. Bob Casey Jr.

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

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

Senator Chuck Schumer has yet to invite Senator-elect McCormick to orientation this week, stating he'll wait for final vote counts.

NEW STORY: Republican Dave McCormick flips pivotal Pennsylvania Senate seat ... Casey, perhaps Pennsylvania’s best-known ...

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

The Associated Press called the Pennsylvania Senate race for Dave McCormick Thursday. It's a stunning upset. Here's how he did it.