Even in the afterglow of a truly super Tuesday, the chief Clinton backers today are not laying out a plausible scenario for how they actually get enough delegates to win, except....they (Terry McAuliffe and Gov. Ed Rendell) are now introducing the possibility of a re-vote in Michigan and Florida. If Hillary wins big there, then she has a shot, but the Clinton managers have resisted the idea, claiming, quite obnoxiously, until now, that they already won in those states -- even though they were "illegal" primaries from the party's view.
Now Obama is on the spot. He can plausibly claim that Clinton had agreed to party rules, now wants to break them, so tough luck. But the party can shift course itself and say it's okay if the two states want to spend the money to vote again. Then Obama looks like he has dissed the voters in those states, who would then take it out on him -- running up the exact big margin she needs to win. Could happen. He may have to agree to a vote and a fair fight -- which would make this a whole new ballgame, with The New Math suddenly not so one-sided in his favor.