The race for one of Pennsylvania's U.S. Senate seats still isn't over. An automatic recount started Wednesday and state law requires all counties to complete their recount by Nov. 26. Officials in Philadelphia say it could take up to four days to tabulate all the ballots cast in the state's largest city.

Democratic-majority election boards in Montgomery, Philadelphia, and Bucks counties voted last week to count the ballots that lacked a correct date.

U.S. Sen. Bob Casey (D-Pa.) on Thursday dropped his bid for reelection, conceding to GOP challenger Dave McCormick, putting an end to one of the most hotly contested and expensive Senate races of the cycle,

The recount underway in Pennsylvania’s U.S. Senate race marks the end of a chaotic post-election period that has become the latest example of how disputed election rules can expose weak points in a co

Republican Dave McCormick will defeat Pennsylvania Sen. Bob Casey, CNN projects, boosting the GOP majority in the Senate next year.

Senator Bob Casey has conceded to his Republican opponent, David McCormick, in a Pennsylvania race that was so close that it triggered a recount.

Democratic Sen. Bob Casey called Republican David McCormick to concede in Pennsylvania’s U.S. Senate election. The move comes after the race was too close to call and triggered an automatic recount.

Democratic Sen. Bob Casey has conceded to Republican Dave McCormick in Pennsylvania’s U.S. Senate election after a close race triggered an automatic recount.

Bucks County, Pennsylvania, Commissioner Diane Ellis-Marseglia apologized for claiming court precedent "doesn't matter" in relation to provisional ballots.

A recount had been triggered in the Pennsylvania Senate race as the initial result was within 0.5 percentage points.

Incumbent Sen. Bob Casey on Thursday conceded in the U.S. Senate race in Pennsylvania to Republican challenger Dave McCormick. In an email from his campaign, Casey, a Democrat, said he called McCormick to congratulate him on his win in the race.