i just remembered something my prof said about the kerry exit polls about a month back. do you knwo how exit polls are conducted? simply, it's based on asking people who just finished voting (and are exiting teh polling booth) who they voted for. guess what? MORE kerry voters talked to teh pollsters than bush voters did. the reason? well, maybe kerry supporters were more vocal in voicing their hatred for bush. as a result, the exit polls showed kerry leading. another case in point about selection bias...