Obama came pretty close in 2012.If not for the highest black voter turnout ever he would have lost re election.
Thats a pretty pretty useless stat imo as there are around 35% of anti racist whites in The US who will always vote against the racist confederate states candidate.
Just to recap Warren was ahead of Biden 33% to 18 % with whites Hillary was ahead of Obama 43% to 25% with whites Obama and Biden were ahead with blacks.Obama and Biden won the nomination.