The idea of a superdelegate mini-convention is starting to be mentioned by party people themselves:

Bredesen is doing something about his concerns. He was in Washington this week to promote his idea for holding a “superdelegate primary” in June, in which the 795 party bigwigs would gather to hear one last time from Clinton and Obama before casting a final vote.

Rather than allow the horse-trading and bloodletting go on all summer, he’d get it over with during a two-day business meeting in a neutral, easily reached city like Dallas.

“Invite the candidates to come and talk if they want, and then literally call the roll,” he explained. “We should not go through the summer and have a divided and exhausted Democratic Party. The inescapable conclusion is: OK, you’ve got to find some way to bookend and bring it to closure earlier. How do you do that? Do it in June rather than August."

The governor said he decided to push the plan because of what he called a “sea change” in opinion among Democratic elites. What once appeared to be a once-in-a-generation blessing — having two strong candidates with significant appeal among Democrats — seems more like a burden now, as the race drags on toward April and May contests that are unlikely to offer any more clarity than the muddled results of the past three months.