Republican David McCormick cut Democratic Sen. Bob Casey’s leads in Philadelphia and its populous suburbs and built leads in the more GOP-leaning parts of Pennsylvania, foreclosing the incumbent’s pat

Republican Dave McCormick appeared to win a major upset victory in Pennsylvania, beating three-term incumbent Bob Casey, which would give the GOP a key win in the U.S. Senate, where it now holds 53 seats.

Republicans knocked off Democrats in two perennially contested U.S. House seats in eastern Pennsylvania while U.S. Rep. Scott Perry, one of the hardest right members of the chamber, survived a challenge in a southern Pennsylvania district with more moderate politics.