Why are whites in LaSalle Parish, LA so reactionary?

[Alcibiades]

It is also interesting to point out Cameron Parish in the southwest corner of the state which I guess is more Catholic but has swung Republican much harder more recently while LaSalle Parish flipped in the 1950s.

Cameron is rapidly depopulating--it's extremely vulnerable to climate change and has been heavily damaged by most recent hurricanes. I wouldn't be surprised if there were electoral effects from this.

What do you think would be the electoral effects of this climate-driven depopulation, and why?

[Alcibiades]

It's in Protestant northern LA and it's adjacent to the Mississppi river valley which has a larger black population. I guess the parish is distant enough from them to attract whites who don't want to live there.

I wonder the extent to which this also helps explain counties like Glascock in Georgia, which really stands out against its neighbors. I once emailed a local professor about it and he didn't have much insight.

I assume the fact that Glascock is 90% white in a majority black area must be the main reason why it is so Republican.