Down in the polls in his bid for a fourth term, Sen. Russ Feingold, D-Wis., has decided he is going to hit Republican opponent Ron Johnson where it hurts: calling into question his support for Wisconsin’s own Green Bay Packers. In a new 30-second ad, Feingold’s campaign shows images of pro football endzone celebrations, including one where then-Minnesota Vikings’ Randy Moss is dancing and pretending to moon the audience to boos from the crowd.