With each passing day, Obama looks weaker.
Romney's ability to defeat Obama are underestimated by too many liberals, he's actually in a very strong position as long as he can get past the hurdle of the primaries. His favorables with Moderates are almost in Scott Brown territory for a Republican: 43-38 compared to 22-65 for Bachmann. He's consistently as popular or more popular than Obama with Independents and swing voters.
Romney's strength pales compared to his weaknesses. Sure, he might be able to make Democratic states like New Hampshire, New Jersey, Michigan, and Oregon close, but he also makes Republican states closer because they're less interested in him. Now, in places like Arizona or Kansas that might not matter, but in places like Georgia, South Carolina, North Carolina, and Virginia--where the race becomes a GOTV drive between hardcore, but not necessarily Republican, conservatives and African-American Democrats--who is going to entice their side to show up to the polls with more enthusiasm?
I can't see GA flipping to Obama. I think he maxed out in 2008.
