Here is a video report assessing who might run in 2012 for the GOP Nomination for President.
The report has analyst Teddy Davis saying Mitt Romney is "the big gun" because he has money and name recognition, and the GOP has a history of choosing "second-time candidates." Romney has been campaigning for other Republicans around the country and built a lot of good will. Davis says "Romney is considered the front-runner." Sarah Palin is the big question mark, as to whether she will run or not. The downside for Palin that Davis pointed out is that "3 out of 5 Americans say she is not qualified to be President."
Newly-elected GOP Sen. Scott Brown is unlikely to run, even though he has become an overnight star with his win in Massachusetts. Davis points out that Brown is not pro-Life, which would hurt him in GOP primaries.