Have to disagree on that. Clinton outperformed Trump by 3.5 million votes in CA. Based on figures in the headline, that would mean more than 60% of the fraudulent votes took place in CA. That would require an institutional operation so massive, it would be impossible to conceal. Every west coast state is a lost cause, as are the north eastern Atlantic states from MD to ME. I believe PA was an anomaly this past cycle, due to low black voter turnout and the amount of third-party voters. The upper midwest states can be retained, if the economy flourishes as it can and should.
I don't take that 5.7 million number as solidly accurate. All it tells me is that there is a massive amount of illegal voting in the US, and that's all I need to know.
And so far as it "would require an institutional operation so massive, it would be impossible to conceal", it isn't concealed. It's out in the open. It's hidden in plain sight.
Illegals is but one problem with voting in California. Welfare recipients are another, and the constant stream of leftist propaganda is another still.
A lot needs to be done to repair what is wrong with California.