Here is the newest Gallup/USAToday swing state poll for which I've been waiting. It shows a huge swing to Obama from the mid-February poll, mostly among women. Obama leads both potential Republican challengers, Romney by 9 points, 51-42, and Santorum by 11, 52-41, in the 12 states with the deciding 156 electoral votes.
This result is highly disturbing, but at this point volatility rather than stability is probably to be expected.