What if you vote for your rational self-interest? This tax applies to income greater than $2 million per year. Let's assume everyone whose tax base will increase will vote against, everyone whose tax base will not increase will vote for. A popular ballot cast this way would pass by a wide margin.

“Democracy is two wolves and a lamb voting on what they are going to have for lunch."

― Benjamin Franklin

Right.

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.

That's not how people vote in elections.[1]

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

[2] https://en.wikipedia.org/wiki/Laffer_curve