Republican Dave McCormick won the U.S. Senate election in Pennsylvania, Decision Desk HQ projected on Thursday, beating Democratic incumbent Bob Casey in an important win for Republicans hoping to capture a majority in the chamber.

On November 5, Pennsylvanians will have a chance to vote for who will represent them in the U.S. Senate for the next six years.

Republican U.S. Senate candidate Dave McCormick on Thursday appeared to declare victory in his race against Democratic incumbent Bob Casey Jr. despite The Associated Press not having called the race and the possibility that the narrow margin triggers Pennsylvania’s automatic recount process.