While Biden has done well in states with a fair bit of racial and ethnic diversity, especially states with sizable black electorates, it’s notable that he looks in good shape to win in Oklahoma, a state with about an 80 percent white primary electorate. However, it’s not like he won by huge margins among white voters there — in the preliminary exit poll, he led Sanders by 11 points, 34 percent to 23 percent, with Bloomberg getting 16 percent.
