Vote with your feet.
In reality, some people will probably leave, and the rest will likely avoid the increase by receiving the income via lower-rate methods. It seems likely that CA is past the peak of the Laffer curve, and will lose tax revenue.[2]
[1] https://en.wikipedia.org/wiki/The_Myth_of_the_Rational_Voter
― Benjamin Franklin
Modern politician who think that they can tax the hell out of the rich and rich won't do anything about it - do not deserve to be listed in a ballot.
Today's wealth is very fluid and today's zero-tax jurisdictions are fighting for foreigners dollars.
Catch me if you can.