Without the "Silent Majority" bullsh**t and a flood of immigrants, Southern California suburbs can no longer overpower and steal the state from the Democrats as had happened in 1960 (by mere absentee ballots), 1968, 1976 (although Carter barely did anything in the West, he could've taken it from Ford if had bothered), and 1988.
No Bill Clinton realigned the state and the Northeast for probably generations,much like Nixon and Reagan took the South.
And now with immigration on the rise...and the xenophobic wing of the GOP still in a powerful place....
I wouldn't be surprised if Clinton won the state by 70% with the right campaign.
No Democrat in history has ever won California at 70%. Hillary would only potentially reach those numbers if she faces Ted Cruz or the black Tea Party doctor dude.