An automatic recount has been triggered in the U.S. Senate race in Pennsylvania between Bob Casey and Dave McCormick. Here's how the recount will work.

The Associated Press declared Republican Dave McCormick the winner on Nov. 7. But the closeness of the results have triggered an automatic recount.

Republican David McCormick is projected to defeat Democratic Sen. Bob Casey in Pennsylvania's U.S. Senate race.

Republicans are going to court in Pennsylvania amid vote counting in the U.S. Senate election between Democratic Sen. Bob Casey and Republican David McCormick, with the contest headed toward a state-m

The unofficial results in the race for the U.S. Senate seat in Pennsylvania have triggered a legally required statewide recount, Commonwealth Secretary Al Schmidt said on Wednesday. Democratic Senator Bob Casey and Republican Dave McCormick have vote totals within the one-half of 1 percent margin that triggers a mandatory recount under state law,

Pennsylvania’s Senate race is heading towards a recount between Republican Dave McCormick and Democratic Sen. Bob Casey. NBC News’ Mark Murray reports.

The U.S. Senate election in Pennsylvania between Democratic incumbent Sen. Bob Casey and Republican David McCormick is headed for a statewide recount, as counties continued Wednesday to sort through outstanding ballots and the campaigns jousted over which ones should count.

Republican David McCormick is projected to defeat Sen. Bob Casey (D-Pa.) in one of the nation’s preeminent battlegrounds, according to Decision Desk HQ, adding to the party’s margins after it took back control of the upper chamber earlier this week.