I don't see how you can confidently assert that, unless you've seen actual studies or surveys of the voting habits and political leanings of those who've relocated from Cali to other states.
Since being in Texas, I've met Cali refugees from both sides of the aisle, but I'd have to say that most have been of the more conservative persuasion than not.
That's only my personal experience over the last ten years, and isn't scientific in any way, but I'm in sales, and talk to a whole lot of people every day.
Well, having been over run by those transplants and eventually forced out of my profession so they could feel good and seeing the same pattern repeated all over the west - I will say it,
Just look at the socialists in POTUS race - look at the regulations they are passing - they are everywhere as they achieved critical mass during B Clinton’s term. They are a cancer, an infestation on this country.