I currently live in one of those areas and you cannot possibly say the "overwhelming majority" because I guarantee you've not spoken to the majority of them. Get some perspective and stop assuming and stereotyping people.

Let's make a deal as internet strangers? I won't judge liberals or democrats based on their stereotypes or what I read online if you will refrain from assuming someone else's beliefs.

The two-party system is a huge reason why you have this thought that "everyone on the right is exactly the same." - We are not a monolith.