Tom Smith, Pennsylvania's Republican candidate for U.S. Senate, introduces Wisconsin Sen. Ron Johnson during a visit with several dozen people at the York County Republican Party office

 

              Tom Smith, Pennsylvania
Tom Smith, Pennsylvania's Republican candidate for U.S. Senate, introduces Wisconsin Sen. Ron Johnson during a visit with several dozen people at the York County Republican Party offices on Thursday, Nov. 1, 2012, in York, Pa. Smith is challenging Democratic U.S. Sen Bob Casey, who is leading independent polls and has won nearly every newspaper endorsement. (AP Photo/Marc Levy)