With Fred's voting record on immigration, HIB Visa's etc., I don't see he would be an asset to Rudy.
Given Rudy's pro-illegal stance, there isn't a candidate in the world that can make him look good. Or, the many other issues that he is liberal on.
If Giuliani actually gets the nomination and his record is exposed for all to see, the only thing the Republican party will be able to do is run against Hillary. The base is certainly not going to be excited about voting for a liberal Republican if many vote at all. Several southern states will suddenly become in play because of how much Rudy's radical liberal positions on abortion, the homosexual agenda and gun rights. It's going to be very hard to win an election merely scaring voters into voting against one's opponent.