Former Governor Jim Blanchard of Michigan, who is a Clinton supporter, says a revote in that state wouldn't make much difference. From TPM:

"I think if we had a vote in Michigan, it could easily be close," Blanchard told me. "The amount of delegates wouldn't make much difference."

Blanchard also leveled a charge at two state Senators that they were gumming up the works of a Michigan re-vote on orders from Obama:

Blanchard also made something of an inflammatory accusation, saying that Obama's two Michigan co-chairs -- state senators Tupac Hunter and Buzz Thomas -- were deliberately slowing the progress of the revote in the Michigan legislature at the direction of Obama national headquarters.

Hunter has said he has concerns about the logistics of the current revote plan, and earlier today the news broke that it didn't have the support in the state legislature it needs to pass. Blanchard suggested that the opposition was being orchestrated by the Obama campaign via the two state senators.

"They're very talented state senators; they're obviously operating under instructions to prevent a vote," Blanchard said. "Preventing a vote is a huge mistake [that could prevent] winning in the fall. I hope they reconsider."

It's clear that Obama is playing hardball on both Michigan and Florida and, as an Obama supporter, I'm all for it. He simply has no reason or motivation to cave to Clinton on this issue. He followed the rules, Florida and Michigan broke them and that's their problem.

Mark Halperin sums up what's going on here:

The Obama campaign has cleverly slow-walked the debate over the Florida and Michigan primaries, knowing that the clock on their side. With Florida essentially giving up, and Michigan struggling to find a solution, Clinton's time -- and options -- are fast running out.

Those who think Obama isn't tough or shrewd enough to handle Hillary Clinton have another thing coming. If you study Obama's political career you would know that he can play hardball with the best of them. At the beginning of this debate about Florida and Michigan the most important outcome for Obama was to make sure the previous results were invalidated. He has succeeded at that. The second most important objective was to avoid re-votes that Hillary could win in a big way and that would allow her to close the delegate gap and claim momentum was on her side. Now, it appears he is close to accomplishing that. He's done it all within the rules that have always been on his side in this conflict.

Hillary had virtually no chance of closing the pledged delegate gap before all this, but now she really has no chance. The delegates in the remaining races will split close to 50-50 and Obama will retain his lead of around 100. Hillary has thrown the kitchen sink at Obama, but he continues to roll up the delegates and extend his lead. I don't know how much longer the Clinton campaign will struggle on but it's clear that they have virtually no chance to stop Obama now.