(VIDEO-AT-LINK)CHRIS MATTHEWS, MSNBC: Apparently back then when Romney was thinking of putting [Chris Christie] on the ticket when he was running, when he was running, he discovered there were some problems, alright? Do you think he might use those problems against him next time? DAVID CORN, MOTHER JONES: Well, that opposition book is rather thick. If Romney doesn't use it, somebody else will. MATTHEWS: And therefore -- but I keep thinking Romney is going to be the nominee after all this is over. CORN: No. MATTHEWS: Look, I'm pretty good at this. CORN: No. No... He's not going to run....