Look at the four states Romney toured with Ryan immediately after adding him to the ticket: Virginia, North Carolina, Florida, and Ohio. George W Bush won all four in both 2000--I'm not going to mention what happened in Florida that year--and 2004. It's another tacit admission that Romney is behind and flailing. He needs to win all of them and he's ahead, barely, only in North Carolina. If he were in as strong a position as he says he is, he'd have picked Pawlenty, and his travel itenerary would feature Pennsylvania, Michigan, Colorado, New Mexico, and Nevada.
I've said it before: it's time for Republicans to get on board with NPV!