South Carolina Has 670,000 Registered Black Voters, Or One Fourth Of Total

Some people are bothered by a new poll as of this writing that has Sen. John McCain ahead of Sen. Barack Obama by 13 points or so. But given that SC has 670,000 registered Black voters out of 2.3 million voters, if you think of that group voting as a bloc, then all Democrats, it's hard to see Senator Obama not winning the state, if not being within 4 points of McCain.