It says so here
but the GOP refuses to facilitate this trend because they are afraid of being called “racists”. If 95-98% of blacks consistently vote Democrat, why would Republicans trying to get the fraction of whites voting for them to go from 60% to 70% be the racist ones? Oh, right, because black people can’t be racist.
A liberal friend asked me once why I was voting for a Republican; I said I’m a white male like you, most of us vote Republican, you’re the one who has some explaining to do not me. This was said facetiously because I was not at all shy about explaining the political reasons for preferring Republicans to Democrats, but the tone of his question had been “how can a nice guy like you support such meanies?” so I didn’t feel like answering seriously. But it’s become clearer to me since then that trying to make white people (and only white people) be ashamed to vote in the interests of the demographic group they belong to is a key strategy of my political enemies (and I don’t even call them opponents anymore, they treat me as an enemy rather than an opponent which forces me to do the same).