As Randi has pointed out previously, the toughest candidate for Mitt Romney to face in the 2012 election won't be Newt Gingrich, Rick Santorum, or Ron Paul - it'll be Mitt Romney.
In a new article from Frank Rich, of New York Magazine, Rich digs even deeper:
As this narrative has it, Americans are at least comfortable with old, familiar Mitt—heaven knows he’s been running long enough. He may be a bore and a flip-flopper, but he doesn’t frighten the horses. His steady sobriety will win the day once the lunatic Newt has finished blowing himself up. As one prominent Romney surrogate, the Utah congressman Jason Chaffetz, has it, Romney is “the most vetted candidate out there.” Maybe—if you assume there will be no more questions about Bain, the Cayman Islands, the expunged internal records from Romney’s term as governor, or his pre-2010 tax returns. Or about the big dog that has yet to bark, and surely will by October: Romney’s long career as a donor to and lay official of the Church of Jesus Christ of Latter-day Saints. But you can also construct an alternative narrative—that the vetting has barely even begun, and that the “Mitt Romney” we’ve been sold since 2008 is a lazy media construct, a fictional creation, or maybe even a hoax.