There could be more than two dozen superdelegate endorsements for Barack Obama by the end of the day. And they all started with Congressman Jim Clyburn this morning.

“Today the [primary] process ends,” Clyburn said in the “Today” interview. “And I hope that enough of us will announce our intentions today so that this evening our candidate, our presumptive nominee, can get to 2,118.”

And from Time:

If (Obama) wins only half of today’s two remaining contests in Montana and South Dakota that puts him 26 delegates away and, as Karen noted earlier today, there looks to be a rush of superdelegates who will endorse as soon as polls close. Clyburn alone could carry with him many of the as-of-yet undecided House members who’ve been waiting for the House leadership to make a move.