Grokenstein, you've said that before, but you've never answered my question: who said that?
Nobody that I know stumped for Nader in 2000 but is stumping for Obama today. (To vote is one thing, of course, but to actively campaign is another.) So who are these progressive flip-floppers???
Edit: I've read elsewhere that Michael Moore stumped for Nader in 2000 but is stumping for Obama in 2008. But he'd already flipped in 2004 to stump for Kerry, so he doesn't fit Grok's pattern.
Surely there must be somebody who does, but I don't think that it's common!