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.

The incredibly tight Pennsylvania race between Democratic Sen. Bob Casey and Republican challenger Dave McCormick will head to a recount, Pennsylvania Secretary of the Commonwealth Al Schmidt announced Wednesday.

A small margin in votes separating incumbent Democratic Sen. Bob Casey from Republican challenger David McCormick Jr. has triggered a recount in the Pennsylvania Senate race, the commonwealth's secretary said Wednesday.

On November 5, Pennsylvanians will have a chance to vote for who will represent them in the U.S. Senate for the next six years.

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

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,

The U.S. Senate race in Pennsylvania will now go to a recount, Secretary of the Commonwealth Al Schmidt has announced.