Joe Wurzelbacher, better known as Joe the Plumber, is considering a run against U.S. Rep. Marcy Kaptur in 2012, according to Republican Party sources. Jon Stainbrook, chairman of the Lucas County Republican Party, said there is "high-level interest in the national Republican Party" in a potential Wurzelbacher candidacy. "We are encouraging Joe to run," Mr. Stainbrook said. "He hasn't made any official decision yet." Chris Maloney, spokesman for the Ohio Republican Party, said a candidate like Mr. Wurzelbacher would have strong fund-raising capabilities thanks to national recognition he received during the 2008 presidential campaign, but added such star power would...