Nate Silver offers a theory as to why Newt Gingrich has been surging in the polls. Basically, it's because Anti-Romney Republicans got tired of realizing their alternative picks were coming off as dumb and Newt seems somewhat smarter. Which he probably is but I also think that as it comes time to actually vote for someone, they're going to realize he'd get clobbered by Obama and decide that as little as they like Mitt, they'd rather have him than Barack.