No, but it's because of race, not politics. Third world people = third world place. Democratic cities are less white or minority white, and every "republican" city has some awful ghetto in it if it has POC. Not to mention all the Meheecan "hard working natural conservative" migrant laborers the chamber of commerce cuckservatives in those districts quietly bring in on behalf of Big Ag.
Ah yes, cousin fucking trailer park meth-head central, AKA "the black belt". There's a lot of white trash but whites also pay all the taxes...who's really holding those areas back?
(I know you're being ironic but I've heard lots of shitlibs unironically make that argument)