Gotcha.
One correction to my above: Edwards is NOT himself a superdelegate. Congresscritters are supers only while in office, and former Presidents and VPs are lifetime supers, but not nominees who lost. Unless they're "party leaders". Supersdelegates are PLEOs (Party Leaders and Elected Officials,
not this guy). So as a former Senator and one-time VP hopeful, Edwards doesn't get a vote at convention, but he does get to toss his elected delegates to Obama, which is like 15 times his single vote anyway.
The other question I'm hearing asked is, why didn't he stay in the race but suspend campaigning? By now he'd have a couple hundred delegates just on the power of his base, and he'd be the kingmaker.