Do you happen to have a breakdown of party affiliations in the South before, say, 1968? ALL the Southern politicians were Democrats.
In fact, until about 10 years ago, if you didn't get a Democratic ticket in the rural south, you couldn't vote in local elections at the primary level, because no one was running on the GOP ticket.
However, as far as we know, Lester Maddox switched to GOP in later life, as many Southerners did. Since Georgia doesn't have voter registration by party, it would be hard to tell.
Maddox died a Democrat.