If Republicans are going to blame Democrats and Barack Obama for the state of the economy, then they are going to fight fire with fire. The Dems’ latest strategy for addressing the nation’s economic problems in midterm election campaigns is to argue that large Republican gains in November would prevent any meaningful changes in financial oversight—and they’re doing that by pointing out candidates’ direct ties to Wall Street. Pennsylvania’s Senate race stands as a prime example, as Democratic Representative Joe Sestak brands his Republican opponent and former trader Pat Toomey as “Wall Street’s congressman." "The one central theme that runs through all the Democratic campaigns is, 'We represent the middle class and the Republicans represent Wall Street,' " said one political scientist. "The difference in Pennsylvania is they've got a real, live Wall Street trader."