The Hillary camp cranked up the pressure on the Obama campaign over the Michigan revote today, demanding that Obama make a public and active push to make a revote happen by supporting the current proposal for a June 3rd rerun of the election.

On a conference call with reporters, senior Hillary adviser Harold Ickes repeated an insinuation that Hillary's Michigan co-chair, former Governor Jim Blanchard, made to me a little while ago: That the Obama campaign is using professed procedural concerns to deliberately run out the clock on the possibility of a revote.

"I know the Obama people are going around saying, `We don't need a rerun.' They're sort of winking," Ickes said. "We are saying that Senator Obama's campaign does not want a primary...There's only one hold-up: Senator Obama. Period. End of story."

The Obama camp has not taken a position on the proposal.

Interestingly, Ickes also claimed that the Democratic National Committee had privately signaled its support for the Michigan revote plan, which could up the pressure on Obama to accept it. I've checked in with a DNC spokesperson on this.

It's unclear, however, whether the Hillary camp's charges -- and the Obama camp's refusal to actively push to make a revote happen -- carry any meaningful political risk for him at this point.