Democratic share of Mississippi white vote, post-1964

[Calthrina950]

Bumping this up considerably, but I have a question, which I am curious about. How much of the Mississippi black vote did Nixon receive in 1972? McGovern only got 20% overall, and had to have gotten a virtually negligible (6% or less) share of the white vote. Given that Mississippi was a third black in the early 1970s (comparable to today), is it plausible Nixon won around 15-20% of the black vote? Moreover, McGovern won only the blackest counties in the state (Claiborne, Holmes, Jefferson).