You can probably make a lot of money at the expense of idiots in this sort of thing. Bet Mitt is betting against himself...
That wouldn't be apparent from Mitt's recent numbers, as Romney is doing quite well, trading most recently at 29.3%, and up 2.4% today. If Mitt was betting against himself his numbers would be going down, not up.
Gee, look at that, Romney is trading for 3.5 x that of Thompson. Things can certainly change!