White evangelicals in the South vs white evangelicals outside the South

[All Along The Watchtower]

In the mid-to-late 20th century, white evangelicals outside the states of the Old Confederacy tended to be considerably more Republican than those within the Southern states (or areas that had Southern cultural heritage but weren't exactly part of the South themselves). This was generally true even through the Reagan years in the 1980s.

In the 1990s, Southern white evangelicals really trended hard toward the GOP camp, to the point that by the time the 2000s rolled around, White evangelicals in much of the country-Southern and non-Southern alike-became the major electoral backbone of the Republican Party.

My question is: Are white evangelicals in the South becoming more Republican than white evangelicals outside the South? Would this parallel a more general trend of Southern whites becoming more Republican than non-Southern whites?