I don't think he's too bright.
He thought that Democrat women would vote for Sarah Palin because they were upset that Hillary Clinton didn't get the nomination.
First of all, Sarah Palin is no Hillary Clinton, and second, democrat women are not idiots, that will vote for a woman just because she is a woman. Sarah Palin is an empty suit, with not a good handle on vocabulary - we don't need another President stumbling over their words. So, Cain, is not too bright in that way of thinking.