N&O Edwards to endorse Obama??

The Under the Dome blog reports John Edwards may be about to endorse Barack Obama for the Democratic nominatin\on. The Huffington Post broke the story and the Dome confirms:

"The Obama campaign has announced a 'major national endorsement' for a rally tonight at 7pm in Michigan, and the rumor mill is swirling that it is none other than Sen. John Edwards."

Could be the knock out punch. What does Edwwards get in return?? Be sure it won't be anything tthat benefits the state he served as a Senator for six years (he said bitterly).
Ciao