Live results: Pennsylvania U.S. Senate race remains uncalled

The presidential race has been called for Donald Trump in Pennsylvania, but the state remains embroiled in a tight U.S. Senate race between incumbent Bob Casey (D) and David McCormick (R). 

Casey has won his last three reelection bids since he won a U.S. Senate seat in Pennsylvania in 2006. McCormick has never held an elected office, but he built name recognition when he went head-to-head with Dr. Mehmet Oz for a republican Senate seat nomination two years ago.

While polling prior to the election showed Casey to be the favorite to maintain the seat, an upset win by McCormick could impact the balance of power in the U.S. Senate. Heading into Election Day, the democrats held the majority advantage in the Senate despite having two fewer seats than the republicans. Three of the four Independent senators skew to the left, which awards them the slight 50-47 edge.

Bob Casey (D) vs. David McCormick (R)

Incumbent Bob Casey (D) and David McCormick (R) along with five other candidates are vying for Pennsylvania's U.S. Senate seat. Casey, whose website describes him as "a voice for middle-class families, workers, and seniors," has won his last three re-election bids since he first won a U.S. Senate seat in 2006.

Meanwhile, McCormick has never held a political office and lost the 2022 Pennsylvania Republican primary for U.S. Senate to Dr. Mehmet Oz, who ultimately lost to John Fetterman (D). Still, the Associated Press called McCormick's campaign "the strongest challenge to Casey in his three reelection bids."

McCormick, an ex-hedge fund CEO, earned an endorsement from former president Trump during his campaign. Casey, meanwhile, was endorsed by both Vice President Kamala Harris and Fetterman.

The Associated Press contributed to this report.