If Trump gets 11 or 12% of the black vote it’s over. The Rats need 96% percent of the black vote and high turnout. If they get less than 90% in Miami, Philadelphia, Detroit, Cleveland those battleground states are lost.
Obama got 93% of the black vote in 2012 and won by 5 million votes. The Latino and Asian vote is now statistically significant at 13%, equal to 13% for the black vote. Obama got 73% of the Asian vote and 71% of the Latino vote.
Trump will cut into that.