(CNN) - A top Michigan Democrat reports that negotiators working to pass an 11th-hour plan for a re-vote in the state are increasingly frustrated with Barack Obama’s failure to either embrace the plan currently being considered, or propose an alternative.
Lawmakers are facing mounting pressure this evening to come up with an agreement before the legislature adjourns Thursday for a two-week recess.
“The Obama people are blocking it in the legislature,” the Democratic source tells CNN, who says that the group has repeatedly and unsuccessfully reached out to the campaign for input and cooperation.
The source says that Obama’s campaign has been asked to craft an alternative or to meet with the Clinton campaign to work out an acceptable compromise, but that those requests have been met with silence.
Obama spokesman Bill Burton disputes this account, though the campaign offers no specifics.
The Clinton campaign has been increasing its criticism of Obama for his failure to back a new primary that would meet national party requirements and allow a full Michigan delegation to be seated at the Democratic convention this summer.
Wednesday, Hillary Clinton made her first campaign appearance in Michigan this year, challenging Obama directly to back the seating of a full Michigan delegation.
Clinton won the January Michigan contest with 55 percent of the vote, but was awarded no delegates. She was the only major Democratic candidate to appear on the ballot; 40 percent of the party’s primary voters chose the “uncommitted” option instead.
Michigan Sen. Carl Levin, who has been a major proponent of a new primary vote, told CNN Wednesday that his group of four unaligned Michigan politicians was hopeful that legislators would vote on the plan this evening or Thursday, which would allow the delegation to be seated “without a floor fight and without a credentials fight.”
But Michigan state Sen. Tupac Hunter, a major Obama supporter, says an “overwhelming majority” of members who support both candidates “find something or the other wrong with it and cannot support it in its current form. A new vote, he added, “does not look likely.”
“From where I sit there are no floating pieces to this,” said Hunter - nothing that can be changed that wouldn’t require a major alteration or abandonment of the current proposal. “I’m not sure how feasible it is at this point… there’s nothing I’ve seen or heard that would lead me to believe that there’s going to be an agreement.”
He called on the DNC Chairman Howard Dean to step in immediately and broker a compromise, to help avoid a “chaotic convention.”
“There’s a lot of hot rhetoric out there. Sen. Obama and Sen. Clinton, they’re in the throes of a campaign, we understand that,” he said. “But the DNC needs to come in and calm the storm.”
–CNN's Jessica Yellin and Rebecca Sinderbrand
(Updated with Obama campaign reaction)