That's interesting. I don't know a lot about southern traditions, but they seem to be in the news more often lately.
Going back pretty much to the founding of the Republican party Southerners saw it as the party of the North. After the Civil War and Reconstruction, it was virtually impossible for a Republican to win an election in the South for nearly a century. As time went on and the national Democratic party evolved, there ended up being a lot of tension as southern Democrats held views that increasingly diverged from those of the national party.
Eventually this tension led to a slow drift of the South away from the Democratic party. It started with the South occasionally voting for third party candidates for president starting in 1948, then finally for Republicans (particularly as the Republican party, seeing an opportunity, began openly courting Southern voters starting in the 1960s). At that point the South tended to vote Republican for president but for conservative Democrats otherwise. However, slowly the Republicans made inroads in lower level elections as well, partly by conservative Democratic lawmakers switching party affiliation to Republican. In the 1990s, the Republicans finally broke through and began dominating Congressional elections in the South as well.
Since then the changes have been filtering down to still lower level elections (state legislatures, county offices, etc.) but the switch still isn't complete, so you still have Democrats who are quite conservative holding elected office at the local level and people who vote straight ticket Republican or nearly so who identify as or are registered as Democrats.
To make a long story short, the South was historically dominated by the Democratic party, and as the politics of the party and the region have diverged, there's been a lag in terms of identification which means that many southern Democrats hold views that are far more in line with the national Republican party.