People are overreacting to this. Who cares? The DMR endorsement wasn't what helped Edwards come in second at the end in Jan. '04, it was Kucinch telling his people to caucus for him. This will just help raise the expectations back up for Clinton in Iowa which will make Obama's win more meaningful.
Uhh... I doubt Kucinich commanded over 20% of Iowa caucus-goers. If he did, he wouldn't have formed an alliance with Edwards.
Well that certainly had a bigger impact than the DMR endorsement on his final numbers.