"He trails Mitt Romney 46-43, Mike Huckabee 47-45, Newt Gingrich 46-45, and is even tied with Sarah Palin at 46.... It's not that any of the Republican candidates are particularly well liked. Only Huckabee has positive favorability numbers at 37/28. Romney's at 32/33, Gingrich at 32/42, Palin at 37/52... But with a majority of Americans now disapproving of Obama it's no surprise that a large chunk of them would replace him as President if they had that choice today."
I still think that once the race gets going and people really look at, say, Romney right next to Obama — really picture the other guy as President — the eagerness to oust Obama will cool off.