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

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

The Republican Senate candidate points to clear rulings from the Pennsylvania Supreme Court that undated and incorrectly ...

An automatic recount has been triggered in the U.S. Senate race in Pennsylvania between Bob Casey and Dave McCormick. Here's ...

Pennsylvania's US Senate race between incumbent Democrat Bob Casey and Republican challenger Dave McCormick is going to an ...

There are simply not enough votes left for Bob Casey Jr., the incumbent Democratic U.S. senator demanding a recount in ...

The Republican candidate led incumbent Bob Casey by over 25,000 votes as the tight race triggered an automatic recount.

The Pennsylvania Senate race between incumbent Bob Casey, left, and his Republican challenger, Dave McCormick, is headed for ...

Pennsylvania's nationally-watched U.S. Senate contest between GOP businessman Dave McCormick and three-term incumbent Sen.

Republican Dave McCormick wins the U.S. Senate race in Pennsylvania, unseating Democratic incumbent Bob Casey. McCormick's win is crucial for Republicans aiming for Senate majority. The election faces ...

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

The RNC filed two new lawsuits in Pennsylvania after several state boards of elections voted to count several undated mail ...