Republican Senate candidate David McCormick has ousted longtime Pennsylvania Senator Bob Casey, according to an Associated Press projection.

McCormick, an Army combat veteran and former hedge fund CEO, led Casey 48.9 percent of the vote to 48.5 percent of the vote, with 99 percent of the vote counted. 

The projection came after McCormick’s team had expressed confidence in a win earlier in the day. 

“McCormick is up 30,679 votes with more to come, as ruby red Cambria County is still outstanding. While votes continue to be counted, any way you slice it, Dave McCormick will be the next United States Senator from Pennsylvania,” said McCormick’s communications director, Elizabeth Gregory.

However, earlier Thursday the campaign of the three-term senator insisted Casey still had a path to victory. 

“The count in Pennsylvania is still continuing,” Casey campaign spokeswoman Maddy McDaniel said. “Yesterday, the vote margin shrunk by 50,000 votes and this race is now within half a point, the threshold for automatic recounts in Pennsylvania. With tens of thousands more votes to be counted, we are committed to ensuring every Pennsylvanian’s vote is heard and confident that at the end of that process, Senator Casey will be re-elected.”

The Pennsylvania seat is the fourth Republicans were able to flip this cycle and adds to the party’s Senate majority, which currently stands at 53-45, with two race calls outstanding in Arizona and Nevada — though Democrats currently lead in both of those races.

Casey’s loss marks the end of a Pennsylvania political dynasty that first began with his father, the late Pennsylvania governor Bob Casey Sr.

Heading into Election Day, the Cook Political Report had rated the race a “toss-up.”