The schism is not so much sectional as it is urban-rural, with suburban being somewhere in between. I think this is inherent. Urban dwellers, like me, are much more dependent on government services than rural people. My grandparents had almost no contact with government, they had electricity, the probably had very low property taxes if any, they voted of course, neither grandfather served in the military, their ages were "in between". They used the Post Office and had mail delivery. They burned their trash, or fed leftover food to their hogs. There was a Co-Op they used for farming stuff.
I doubt the sheriff ever visited, or had need to.
If their local government disappeared entirely, they would have been OK in most respects.
I on the other hand and highly depending on government services. And I pay for that. I think urban dwellers will always be more liberal.