I have note that the usually decent SUSA bombed out pretty badly here, they had the race at Clinton +18 in their final poll.
Their last poll was 3 weeks before the election, just as Sanders was starting to focus on the state.
So it's rather difficult to tell if they were accurate or not.
Also, I think there was a glitch or something in Tulare County. Around 10k Hillary votes suddenly vanished, with all the other totals remaining unchanged. Maybe Reddit hacked the system.
I saw that too. The county went from a double digit Clinton lead to a 40+ Sanders lead.