Update
I'll leave it to others, to comment at length. I'm only going to take this opportunity to note what a blow this is to Minnesota's corporate media outlets, especially Twin Cities-based broadcast news and daily newspapers. Starry-eyed and fulsome, they've done all they can to promulgate their fantasies of the attention and status accruing to them, as a result of two Minnesota candidates in the running for the top job of all. Refusing to consistently, seriously report on the realities of both Michele Bachmann's and Tim Pawlenty's wretched, miserable, horrific records while in public office, has been probably the primary, and certainly the most disturbing, manifestation of that. And now, they're getting at least part of what they deserve, too.
Incidentally, Rick Perry is staying in the race, for now.