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.

McCormick’s victory in the Keystone State marks a major win for the Republican Party and its projected multi-seat majority in the U.S. Senate.

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,