Maybe now is the time to buy stock in Barack. Futures contracts in Obama winning the election in November have tumbled more than 8 percent in the last week and are now trading at 43.4. Bettors now give Hillary a 25.5 percent chance of winning the nomination--up 50 percent over the last week.

McCain's value is climbing as well. He's up 5 percent over the last week and now has a 40 percent chance of winning in the fall according to the Intrade political prediction market. You can see the full results here.

I'm not sure you can put anymore faith in these numbers than polling, which is to say almost none at all, but it's an interesting reflection of perception, and clearly the perception is that Obama had a rough week.