Actually, the fact that his campaign imploded is less important than when it imploaded, because he has the ability to draw attention to himself that might otherwise go to other candidates that might actually have a chance to win. Less so than Sarah Palin, but he has the same affect. So if Newt drops out early, or otherwise becomes irrelevent early, it helps candidates trying to establish themselves nationally like Pawlenty, and also opens a spot for some other candidate that might fill a similar rhetorical slot (although I am not sure what slot that might be at the moment).