You are exactly right. But only half of the blacks I talked to said they would vote for her over McCain. At first none said they would vote for McCain over HRC, but as the primary goes on she is losing more black support. Early in the primary about 80-90% of the blacks I talked to said they would vote her over McCain, but now the number is down to 50%.
I would not expect McCain to get anywhere near 50% of the black vote...there was a similar rift between Cleo Fields and Mary Landrieu in Louisiana, but in the end, blacks sucked it up and voted for Landrieu.