RV

At InTrade as of this writing, Hillary Clinton's odds of gaining the Democratic nomination are offered at 9.1% (in a wide market), while her odds of willing the Presidency outright are bid at 6.5%. So, even after crossing bid-offer spreads, you can effectively sell Hillary-to-beat-McCain at over 71% -- and a couple of hours' patience might improve that by 2-4%.

I think someone is leaning on the market. Why not go over and make it expensive for him?