About half the voters were black, according to polling place interviews, and four out of five of them supported Obama. Black women turned out in particularly large numbers. Obama, the first-term Illinois senator, got a quarter of the white vote while Clinton and Edwards split the rest.
Nonetheless, the racializing of Obama as the "black candidate" (see here and here, among many other things) spells trouble on Super Tuesday. Shame on the Clinton campaign and their surrogates for helping to bring us to this point.