I would watch the Pennsylvania numbers very closely in the next week to ten days. If they continue to show Romney close, you could see a real push there by the GOP, with stops by big surrogates and even Romney himself. (Paul Ryan did a rally at the airport in Pittsburgh this weekend.) But because the GOP has such an enormous gap to overcome in the registered voters numbers — 3.1 million registered Republicans, 4.2 million registered Democrats, and about 1.1 million unaffiliated or other party voters — there’s also quite a bit of skepticism and wariness about committing resources – money, staff, candidate time – that could be spent in Ohio, Wisconsin, or even Michigan.
Rest assured, the Romney camp is watching the Keystone State very carefully these days.