For two reasons:
(1) Romney leads among voters on trust to get the economy going again.
(2) Romney leads among independents.
Let’s take each point in turn.
Romney’s advantage on the economy. This to me is pretty straightforward. Take the recent NPR poll, which was a bipartisan survey conducted by Resurgent Republic and Democracy Corps. It found Obama’s job approval rating on the economy to be underwater, 47-52. The poll also found Mitt Romney to be more trusted on the economy over Obama, 50 to 46 percent.
Poll after poll, I generally see the same thing. Romney has an edge on the economy. That includes most of the state polls.