The perception is that Edwards needed this endorsement to keep up with the financial and organizational machines already in place for Clinton and Obama. As much as Edwards has tried to fight the idea that he is a single state (Iowa) candidate, he has been unable to do so. The non-national endorsement is almost certain to further that idea.Noam Scheiber
The reality is more mixed; Edwards is likely to win the lion's share of state endorsements and enjoy the benefits that come -- primarily ground troops for the turnout battle -- with such backing. But, he will no not get the big bang that would have come from a national endorsement.