(Yeah, we lifted that definition from Wikipedia.) There's a lot of talk today about Rep. John Lewis defecting to the Obama camp, possibly creating a domino effect amongst other superdelegates.
Editorial note: Whoa! You've found a super-old post here on BuzzFeed, from an earlier era of the site. It doesn't really represent where we are anymore, and may in fact be totally broken, but we're leaving it up as a part of our early history.