In the race for a critical Senate seat, Pennsylvania incumbent Bob Casey Jr. was challenged by Republican Bob McCormick.

Republican Senate candidate Dave McCormick stepped up his legal efforts to block the counting of undated mail ballots Friday, ...

Republican Dave McCormick won the U.S. Senate election in Pennsylvania, Decision Desk HQ projected on Thursday, beating ...

The tight margin in the Senate race between Sen. Bob Casey, D-Pennsylvania and Republican Sen.-elect Dave McCormick has ...

Republicans are going to court in Pennsylvania amid vote counting in the U.S. Senate election between Democratic Sen.

The Pennsylvania Senate race is heading for a recount as Republican Dave McCormick continues to lead Sen. Bob Casey (R-Pa.) ...

Sen. Bob Casey is locked in a tight race with Dave McCormick in Pennsylvania. There will be an automatic recount of the votes ...

The incredibly tight Pennsylvania race between Democratic Sen. Bob Casey and Republican challenger Dave McCormick will head ...

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

A small margin in votes separating incumbent Democratic Sen. Bob Casey from Republican challenger David McCormick Jr. has ...

Republican Dave McCormick leads Democratic Sen. Bob Casey by about 28,000 votes, under the 0.5-percentage-point threshold for ...

Casey has refused to concede despite multiple outlets calling the race for David McCormick, with the recount due to be ...