I agree, things are getting tough for Romney in Ohio. If I were a Republican strategist, I'd pull Romney and Ryan out of all campaign stops anywhere but Ohio. They need to close about a 2.5 point deficit in four days or lose the election.
A Republican buddy of mine said to me today that he thought the thing to do was yank Romney and Ryan out of every state but Pennsylvania, on the theory that since Penn hasn't been saturated by ads and campaign stops the way Ohio has, it might be easier to close a 5 point deficit there than to close a 2.5 point deficit in Ohio. It would also have the advantage of being a completely unexpected move, one the Obama campaign would have to scramble to counter.
It's interesting, out of the box thinking. Campaigns don't usually like to take big risks, but it's getting pretty close to hail mary time for the Romney campaign.