I found this county map of 1884 election results pretty interesting because it shows southern “redemption” in progress. Whites may have controlled all the southern states by 1884, but on the county level, it’s interesting to note a lot of counties voting for Blaine. Some of this came from the white Republican areas of the South like east Tennessee. But look at southeast Louisiana or the Arkansas side of the Mississippi Delta. These are heavily black areas where enough African-Americans are still voting to swing the counties toward the Republican. Of course, you hardly see any of that in Mississippi, Alabama, or Georgia.
Just worth remembering the piecemeal process of white supremacy.