Richest vs. Poorest States
People in Republican states are poorer than those in Democratic states. Sure there are a couple of exceptions, but when you look at the top economic states and the bottom economic states, it is obvious which Party's states do better.
I live in Maryland which is the nation's richest state. We also have a very progressive tax system in the state. These monies are invested in roads, schools, and social programs that help keep the standard of living high. Sure you hear some belly-aching from some Republicans that taxes are too high, but the State keeps on electing Democrats. On the other side of the economic coin is Mississippi. Truly a Red state. It boasts low taxes, but few companies want to relocate there.
Somehow, uneducated masses of people in these poor states think that Republicans will help them. If they would just become more liberal/progressive, they would abandon the failed economic policies of Republicans and put themselves in a position to actually improve their lives. One day they will learn.