Campaigns turn to economy ahead of jobs numbers

A day before the Labor Department releases jobs figures for July, the dueling presidential campaigns turned their attention back to the nation's fragile economy, each blasting the other as bad for middle class Americans.

President Barack Obama's campaign used a 30-second television ad to hit Mitt Romney for his tax plan, saying in the spot that his Republican challenger's proposals would increase taxes on middle class Americans while lowering tax rates for the wealthy. The campaign said the ad would run in New Hampshire, Virginia, North Carolina, Florida,