I have never been to Oklahoma (a heavily Republican state today, in which every county went for every Republican presidential candidate since Bush in 2004), but I have recently found some interesting data on its politics. As far as one can tell on a map, the state seems to be politically divided into four (actually five, if you count Native Americans as a group separate from Appalachian Democrats) groups (all of which but the first went for Trump in 2016):
1. The inner city. These are generally minorities and urban White liberals. However, these are a minority even in the urban counties of Oklahoma. By far the most likely voters to favor drug liberalization, banning cockfighting, and banning capital punishment.
3. College Republicans (really, college-educated voters, but these were traditionally Republican before this party system). Heavily concentrated in Tulsa, Oklahoma City, and its suburbs. Distinct from urban liberals in that they vote heavily Republican. This is the most politically correct voting bloc in Oklahoma, as well as the most college educated. Not all are actual Republicans. By far the most Republican demographic in the state in 1976, by 2016 they were definitely to the Left of the state as a whole in their presidential voting habits, though still went heavily for Trump by any measure. The most likely Romney-Hillary voters. Generally likely to favor drug and alcohol liberalization, and the most likely voting demographic in the state to favor same-sex marriage, and quite possibly alcohol liberalization as well (though the urban liberals may tie for this).
4. Appalachian Democrats. The demographic farthest to the left of the state on some issues (e.g., public education) and furthest to the right on others (e.g., drugs, cockfighting). The least politically correct demographic in the state. Traditionally Democratic on the presidential level since the days Oklahoma became a state, but became much more Democratic as a result of the Fair Deal. Similar voting behavior to Arkansas, Tennessee, the rural Florida panhandle, and northern Alabama. This demographic still helps elect Democrats to the state House (unlike the college Republicans). The most likely Obama-Trump and Kerry-Clinton ’08-McCain voters in Oklahoma. On a map, it’s hard to separate them from Native Americans, who tended to favor Affirmative Action. Native Americans are the Oklahoma demographic most supportive of alcohol restriction. Native Americans were the least likely group to support imposing Christianity onto the state government.