night on ac 360. campaigns don t spend the kind of money on polling and focus groups unless they are seriously exploring something. it was only known by a half dozen of the top obama senior advisers. martin says vice president biden didn t eaven know the president s top advisers were considering replacing him. another revelation mitt romney considered chris christie as his vice president candidate before deciding on paul iran. a big i told you so with more americans dropped by their insurance carriers because of obama care. republicans have been quick to point out they predicted this exact scenario back in 2010 even before that when the president was making a lot of promises that so far have not panned out. chief congressional correspondent dana bash has