Ed Kilgore considers the possibility:
[N]ow that Bachmann is the real deal, her candidacy is about to endure its toughest moments yet—including intensified scrutiny of her background and character (which is already very much under way), unrealistic expectations for her candidacy, a possible existential threat from Governor Rick Perry, and GOP elite misgivings about her electability. In the coming months, this multi-faceted stress test might just send her back to obscurity well before the first delegate-selection events in Iowa, New Hampshire, and South Carolina even take place.
The Dish 