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

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

David McCormick at Donald Trump's Pittsburgh rally. (Charly Triballeau/AFP/Getty Images) Republican Senate candidate Dave ...

Pennsylvania’s incumbent U.S. senator just isn’t ready to let go. Bob Casey Jr., denied a third term in Washington by voters ...

(AP Photo/Gene J. Puskar) Republican Pennsylvania Senate candidate David McCormick arrives to speak during an election night ...

Anti-Israel Protesters Hold Photos of Hitler ... this year’s Pennsylvania Republican Senate nominee, Dave McCormick, was quick to turn around one of the most damning political ads of the ...

Republican Pennsylvania Senate candidate Dave McCormick's team say they are confident he will win his race against Sen. Bob Casey as the state continues counting votes.

The unofficial results in the race between incumbent Democratic Sen. Bob Casey and Republican Dave McCormick stand at ...

Incumbent U.S. Sen. Bob Casey is not ready to give up his seat just yet, even as the margin of votes show the three-term ...

Race between Senator Bob Casey and challenger Dave McCormick may trigger an automatic recount if the vote tally ends up too close.

Democrats are holding out hope that Sen. Bob Casey can pick up enough votes to hold on to the Pennsylvania Senate seat.

McCormick declared victory in the Pennsylvania race but is seeking to challenge provisional ballots in the Democratic stronghold.