I just had a random thought.
Taking a look at many of these perennial right-wing states, West Virginia, Alabama, Texas, etc, etc. These areas are dead last in America on high school graduation rates and Bachelor Degrees. Since lack of education disproportionally produces right-wing voters that support, and elect officials that are extremely against taxation.
As a result, their schools fall behind liberal areas in funding, and they continue this self-fulfilling prophecy of voting right-wing officials into power due to their lack of education.