And don't forget, only half the states have their own state militia NOT under the command of the US National government. Every other state would need to start from scratch and make their own and get that set up.
Illinois is the same as a lot of other "blue" states in that only the major inner cities, with their high population are democrat, the rest of the state is republican and gets lumped in with them, even though their political views are drastically different. That's why I hate it when people call "such and such state - oh, those liberal jerks" or whatever because it isnt the whole state, just the inner cities and there is a higher population in those cities than in the geographic rest of the state.
You've described California, I am a native. When I was in High School in the late 1960's Calif was in political transition, but still conservative, Ronald Reagan served two terms as Gov and later to become President.
For a 50+ year period, the years 1967 to 2020, Calif has had eight Governors, four Republican and four Democrats. Of course some of those Republican gov's have been RINO's.
Calif was Agriculture & Defense industry both conservative at that time. Now the primary industry is Agriculture and Liberal Hi-Tech and Finance has replaced conservative Defense Industry.
The cities got bigger and bigger until they reached a tipping point where the Cities could now dictate the politics. BIG Cities are political bullies, they can dictate to the rest of the state. Conservative areas in California have had some responses to the Rioting lately, gun owners standing up to criminals that destroy. The response has surprised some members here, this is the old California the rural areas. The city mayors are just shocked that a good portion of the rural areas are still conservative.