[nervousvarun]

To add to that...there are a not-insignificant volume of people escaping California, which leaves more of those who are ULTRA-California.

So you're concentrating the California of California as well.

[moduspol]

IMO this is what has been happening in virtually all US cities. The people that stay in them are increasingly in agreement with themselves politically simply because the others leave.

[brookst]

Seems to be true everywhere. Florida is certainly selecting for Christian nationalists, for instance.

[nervousvarun]

Agreed. It's not a uniquely California phenomenon the US is obviously becoming increasingly divided politically.