The Californians who have been leaving in recent years are mostly Leftugees....ie they’re the kind of people you want.
The idea that most of the people leaving blue states are coming to spread the Leftist plague is outdated.
That depends a bit on income level. There a BUNCH of wealthy lefties that bought rural retreats and second homes since 2019 out here in Montana. Drove the prices through the roof. Drive in with their friggin Obama and Biden Harris bumper stickers and sit around dinners sipping coffee and talking their socialist trash.