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

The RNC filed two new lawsuits in Pennsylvania after several state boards of elections voted to count several undated mail ballots following the state supreme court's ruling on the issue.

The U.S. Senate election in Pennsylvania between Democratic incumbent Sen. Bob Casey and Republican David McCormick is headed for a statewide recount, as counties continued Wednesday to sort through outstanding ballots and the campaigns jousted over which ones should count.

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

The U.S. Senate election in Pennsylvania between Democratic Sen. Bob Casey and Republican challenger David McCormick is officially heading for a recount. The secretary of the commonwealth announced on Nov. 13 that a statewide recount is legally required based on the race’s unofficial results — which have Casey narrowly trailing McCormick.

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

The U.S. Senate race between Republican Dave McCormick and Democratic Sen. Bob Casey will go through a recount after the senator declined to waive one Wednesday.

The incredibly tight Pennsylvania race between Democratic Sen. Bob Casey and Republican challenger Dave McCormick will head to a recount, Pennsylvania Secretary of the Commonwealth Al Schmidt announced Wednesday.

Several Pennsylvania county election boards voted to include illegal ballots in ballot recount for Senate seat