Sadly, the candidacy of any black candidate will go nowhere after three plus years of ozero endlessly playing the race card to the point where Americans are now political assets instead of American citizens first.
In Cain's situation zero has played the race card so much that most all black candidates will be seen as black first and Americans second. Perhaps this is the legacy of Barry/barak Hussein whatever his real name actually is.
That may be true in the Media's eyes - and the folks watching CNBC and the like.
I think more folks are starting to buy a clue. Maybe it is just in a few select states, like Texas, because this state is so conservative. Your statement may be true in California, New York, New England...but those locales are starting to fret about other things besides Race, etc.