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

Pennsylvania voters cast their ballots Tuesday in a high-stakes U.S. Senate contest between incumbent Bob Casey and Dave ...

Republican victories were most pronounced in Pennsylvania, where deep dissatisfaction surfaced with the status quo, more ...

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

Chuck Schumer has now extended an invitation to Senate orientation to Republican Dave McCormick, but Democratic Sen. Bob ...

The U.S. Senate election in Pennsylvania between Democratic incumbent Sen. Bob Casey and Republican David McCormick is headed ...

David McCormick, the Republican former hedge fund CEO poised to take Sen. Bob Casey's seat in January, has been invited to the Senate orientation Wednesday.

HARRISBURG, Pa. (AP) — Republican David McCormick has won Pennsylvania’s pivotal U.S. Senate seat, as the former CEO of the ...

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

Sen.-elect Dave McCormick will travel to Washington, D.C., for freshman orientation on Tuesday, according to a source ...

WASHINGTON — Republican David McCormick cut Democratic Sen. Bob Casey's leads in Philadelphia and its populous suburbs and ...

Republican David McCormick cut Democratic Sen. Bob Casey’s leads in Philadelphia and its populous suburbs and built leads in the more GOP-leaning parts of the state, foreclosing the incumbent ...