Great chart; thanks.
I see that by 2020 the gently ascending level of A-A voting for GOP (Trump) equalled the level of Clinton’s second term (i.e. “the first black president”); and twice as high as LBJ’s 1964 election (no wonder LBJ made that disgraceful remark)—which was the second-lowest GOP participation of all, with Zero‘s second term the lowest. This, after the sustained media lies that Trump is racist.
2020 might have been higher if not for all the “harvested” ballots—LOL!