Weigel

Here's one of your Iowa GOP caucuses frontrunners, wringing every last drop out of her opposition to the debt ceiling hike, while remaining elusive on just how the budget would be balanced this year.

And here's Mitt Romney, your other front-runner, sticking to his theme and portraying Obama's America as a jobless wasteland.

One's a primary ad; one's a general election ad. They really are polar opposite campaigns. When Romney eventually opposed the debt limit hike, he did it as a press release, an afterthought, because who is this voter who's going to cast a November 2012 vote based on which presidential candidate wanted to hike the debt limit?