Congressman Allan West must be, so must be Tim Scott, Thomas Sowell, Star Parker, Larry Elder, Walter E. Williams, Ken Blackwell and many more
Everyone one you named, and then some, were who popped into my mind immediately.
Some of these are definitely married, and others I don't know their marital status...so I can't say I know for sure of any single blacks who won't vote for Obama, but I'm sure there are a bunch.