By MARC LEVY HARRISBURG, Pa. (AP) — 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 Associated Press called the race for McCormick last week, concluding that not enough ballots remained to be counted in areas Casey was winning for him to take the lead. A noon deadline passed Wednesday for Casey to waive his right to a statewide recount and Democratic Gov.