Aside from once-and-future President Donald Trump's unexpectedly decisive win, one of the most surprising results in Tuesday's election was Republican Dave McCormick's apparent victory over three-term U.

Republican Dave McCormick was projected to defeat Sen. Bob Casey (D-Pa.), denying him a fourth term in an upset that signals a dramatic shift in fortunes for Democrats in the country’s quintessential battleground state.

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.