Let's just say it. Conservative Republican support for Herman Cain should help to eliminate any residual charges of racism against Republicans and conservatives. I've felt that was true for some time anyway. Republican President George W. Bush appointed Colin Powell as the first black Secretary of State, and Condaleeza Rice as the second. Conservatives and Republicans supported Alan Keyes for Senator from Illinois against Barack Obama.
It's ideology now that trumps race or sex.
Of course, it doesn't eliminate the charge that Republican and conservatives prefer incompetent ideologues over competent pragmatists.
Or to put it another way, loudmouth ignoramuses, even if they're black, still attract far too many conservative Republicans.