Paul Waldman's view of Cain's relationship to the GOP:
A big part of his job is to show the world, just by his presence, that conservatives aren’t racists. But that means buying into the prevailing conservative narrative on race, which says that anti-black racism is a thing of the past, and the only racism that exists anymore is racism directed at white people. And the critical corollary is that there is no more vile kind of racism than white people being falsely accused of racism.
And on the "Niggerhead" fooferaw, Cain just violated a core tenet of the Tea Party. Maybe he's the next to fall from favor. But I'll bet you he gets much more attention at the next debate.