U.S. Senator Bob Casey is swarmed by reporters and television cameras during a brief press conference held Tuesday, Nov. 6, 2012 at the Hilton Scranton & Conference Center in downtown Scranton, Pa. Casey is seeking a second, six-year Senate term. (AP Photo/ The Scranton Times-Tribune, Butch Comegys) WILKES BARRE TIMES-LEADER OUT; MANDATORY CREDIT

Associated Press
U.S. Senator Bob Casey is swarmed by reporters and television cameras during a brief press conference held Tuesday, Nov. 6, 2012 at the Hilton Scranton & Conference Center in downtown Scranton, Pa.  Casey is seeking a second, six-year Senate term.  (AP Photo/ The Scranton Times-Tribune, Butch Comegys) WILKES BARRE TIMES-LEADER OUT; MANDATORY CREDIT
U.S. Senator Bob Casey is swarmed by reporters and television cameras during a brief press conference held Tuesday, Nov. 6, 2012 at the Hilton Scranton & Conference Center in downtown Scranton, Pa. Casey is seeking a second, six-year Senate term. (AP Photo/ The Scranton Times-Tribune, Butch Comegys) WILKES BARRE TIMES-LEADER OUT; MANDATORY CREDIT
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