Democrats had hoped to make a long-shot effort to flip the upper chamber, with Gov. Josh Shapiro endorsing just enough candidates to bring the Senate to an even split. But Republicans successfully fended off their challenges.

Senate Republicans are feeling optimistic they’ll expand their majority to 53 seats next year as Sen. Bob Casey (D) is trailing Republican David McCormick in Pennsylvania by more than 50,000 votes with 95 percent of the vote counted.

Three races for the U.S. House in Pennsylvania remained uncalled by The Associated Press on Wednesday, as vote counting continued and Republicans fought to keep their slim majority in the chamber. A House majority would give the GOP a full sweep of power in Congress alongside President-elect Donald Trump in the White House.