David McCormick is currently ahead of the incumbent Democratic Senator Bob Casey by a narrow margin, according to the AP.

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

Pennsylvania’s Senate contest between Democratic incumbent Bob Casey and Republican challenger David McCormick is still too ...

"Casey was running in a very tough environment for incumbents. ... People are sick of Washington and politics as usual," a ...

Pennsylvania's U.S. Senate race between three-term Democratic Sen. Bob Casey and Republican challenger David McCormick could help Republicans pad their newfound majority.

David McCormick, Republican, declared his victory over Democrat Sen. Bob Casey in a contentious senate seat race in ...

Senate Republicans are feeling optimistic they’ll expand their majority to 53 seats next year as Sen. Bob Casey (D) is ...

The race for Pennsylvania’s U.S Senate seat between Bob Casey and David McCormick remains uncalled as ballot counting continues in the swing state. Check live results.

The race between Pennsylvania U.S. Sen. Bob Casey and GOP opponent Dave McCormick remained too close to call on Wednesday morning. Casey, who is seeking a fourth term in the Senate faced the ...

With no decisive winner called in the tight race for Pennsylvania’s U.S. Senate seat, David McCormick’s campaign manager said ...

It's been more than 24 hours since the presidential race was called for Trump in Pennsylvania, but the state remains embroiled in a tight U.S. Senate race between incumbent Bob Casey (D) and David ...

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 ...