Those were numbers for “minorities” not blacks. Black approval is much higher than 77%.
There is sort of a mantra in this country, at least among punditry, that blacks are socially or within their families a highly conservative lot. Whenever I hear that I laugh out loud.
Obviously, there are extremely conservative blacks. Thomas Sowell and Walter Williams come to mind. The vast majority think to the left of Vladimir Ilyich Lenin no matter how self destructive that line of thinking really is.