This of course ignores statistics. The absolute number of registered Democrats in California continue to increase, registered Republicans continues to decrease.
As far as support someone like Trump, who promised to deport all Spanish speakers, regardless of legal status or country of origin, to Mexico. California just passed the 50% point of it's citizens self identifying as Latino or of mixed heritage including Latino. Why would someone who lists themselves in this way ever vote for someone who is campaigning on having them deported. FYI- I am not one of those who registered themselves as Latino, despite my name.
BTW - I love California, that state that is most likely subsidizing your state to keep it afloat, as many states operate with a huge deficit to the federal government.