How did they form? What are their specific traits? Stereotypes (even untrue, if marked as such)?
If cultural differences coincide with geography, please mention in, too.
In the questions about weird things people from different continents do somebody pointed out, that Europeans have little knowledge of this, so please fix my ignorance.
About 40% of all of those blue states are doing the same. It’s only more evident in Wisconsin because of our gerrymandering and re-electing Russian Ron.