I still believe he didn’t have that much following.
He got in with lots ands lots of fraud, period.
I know plenty of whites that voted for him; they were desperate, and McCain had nothing to offer. A lot of whites had those stupid “Obama” bumper stickers, until a few months after the election when they realized he couldn’t care less about them.
I know some whites who intend to vote for him again, though a fraction of those that had previously.