This will be quite short lived. Remember the Republican primaries? Candidates would shoot above Romney (the candidate no one liked) then come back down again. Well Romney is Newt Gingrich in this analogy. Romney is Herman Cain. Romney is Rick Perry.
The polls will start to swing back toward a tie or an Obama lead by the end of this week.
It all depends on his performance in the next couple debates. If the next couple of debates prove the first one is a fluke, then Obama returns to the lead. Otherwise, Romney might be looking at a win.
