Where is this showing up in election results though? You all continue to dismiss election results in favor of polling as if polling is more reliable than actual results. Even in the South Carolina primary Trump lost urban Black precincts to Nikki Haley so even the few Black voters already in the GOP don't seem that solid for him.
It's unlikely that 100% of that vote was White. If Trump was gaining that many Black voters he would be seeing some increase in support even in the primary in heavily Black precincts. With the exit polls showing Trump carrying the non-White vote 56-43 it's highly likely that Haley received a strong share of what little Black vote there was in the primary.
