But the extent of the party’s power in the U.S. Senate remains unclear as due to the outstanding race in Pennsylvania. Democratic Senator Bob Casey has yet to concede to his Republican challenger Dave McCormick though several news outlets have since called the race in McCormick’s favor.

Despite the recount being called, it remains an uphill battle for Casey, who still trailed by more than 25,000 votes as of Thursday afternoon. He would need overwhelming success both in ensuring remaining ballots are counted, and that those voters picked him.