I don't know WHAT's going on. The one that really upset me was Ned Lamont. John Edwards was the one who personally showed up and campaigned for him against Lieberman. Yet he endorses Obama, whose silence was deafening? Here's Josh Marshal's take on the endorsements:
Now, there are a bunch of things you can draw from this spate of endorsements. One is that these folks don't seem worried about themselves running or having their supporters run with Obama at the top of the ticket. And these are people from either very conservative or somewhat conservative states. Despite the fact that Obama is running in some ways to the right of Clinton (at least tonally, as the candidate of unity and bipartisan reconcilation), there are still a lot of questions inevitably being asked about whether the country is 'ready' for Obama, whether that's his race, his name, his background in community organizing, his youth, etc. So these folks think America's ready; in fact, more ready than they are for Hillary.
But that isn't the biggest significance. The key is timing. You don't hit a big time politician like Hillary Clinton when she's down unless you're really against her and you're fairly confident she's not getting back up. After winning in New Hampshire, albeit narrowly and after the clobbering in Iowa, there's been a sense that Clinton may be back on track to consolidating her frontrunner status and perhaps following a modified version of the standard script in which the anointed frontrunner gets a scare in the early states before mopping up the competition as the race goes national. But these four clearly don't want that to happen. In fact, they're sticking their necks pretty far out to help make it not happen. And their endorsements, coming right now, tell me they have some confidence it won't.
http://talkingpointsmemo.com/archives/063503.phpI don't know if Josh is right or not, but it does seem to explain some very odd endorsements, plus the timing.