California Secretary of State admitted an independence measure to collect signatures, it will probably make the ballot. It might well pass.
Imagine if that passed. It would be the world's 4th largest national economy. Leaving with 1/4 of the old country's food, and they might have to pay a tariff. The taxes California pays to subsidize red states would be gone, and they'd have to support themselves. And if there was a fight, well, you don't really want to go up against where so much ...
... technological power and manufacturing base is.
Western Australia did this in 1933 and it passed with 66% of the vote against a turnout of 91.6%. It was never ratified.
https://en.m.wikipedia.org/wiki/1933_Western_Australian_secession_referendum
@vk6flab - It's sort of apples and oranges, because Australia was in effect an independent nation, as was Canada, but they only did the final legal process in 1986 and 1982 and are still constitutional monarchies, but it's mostly symbolic. Kim Campbell (briefly PM of Canada) told me when we met around 1999 that the Queen of England was the head of state and not her.