I'm not sure, I am afraid Perry wouldn't do well in debates with Hussein.
Then again, I don't think Cain has any chance of beating Hussein. Gingrich on the other hand might be able to if he can stay focused for more than a few minutes at a time. Newt would likely do very well in a debate with Obama, but the rest of his campaign would likely be a wreck. And ugh, Callista... His latest wife really does not come across well - almost like some creepy plastic person.