Biden and Webb are both out. Chafee is a national punchline. Lawrence Lessig remains the only serious Democratic contender you haven't included in your prediction market, even though he has more support than O'Malley in the most recent Monmouth poll. So he's pretty much the third most serious contender for the Democratic nominee, and he's not even in your market--but Al Gore is?
Please make your market reflect the actual election. Thanks.