>> reporter: good morning, bill, big anticipation, of course is that he will get to that one allegation that everybody knows, so well, the allegation that he tried to sell barack obama's former u.s. senate seat. but, he's got other allegations he may get to ahead of that. the allegation that he tried to shake down the racetrack owners or the road contractors, but, the one legal experts say could hurt him the worst is the allegation that he tried to shake down the ceo of children's memorial hospital. all of the rest of the allegations can be played off that's way things are done in chicago, hard ball politics but with children's memorial hospital you are talking about withholding money from sick kids. so in terms of prison time or guilt or innocence, your legal experts say that is the one that will carry the most weight and everybody is looking to see when they get to that. bill? bill: is there any way to tell, mike, if his testimony is helping his case or hurting him? >> reporter: well, you know, the most glaring testimony, really, since the defense took overcame