The final PPIC poll before the 2012 election was Obama +12. He won by 23 points.
Because that final PPIC Poll surveyed before hurricane sandy
(10/14-10/21. CA: Obama 53 | ROmney 41 )
At that time National Poll number was
Romney vs Obama
WashTimes/JZ Analytics* 10/18 - 10/20 800 LV 3.5 50 47
CBS News 10/17 - 10/20 790 LV 4.0 48 46
NBC News/Wall St. Jrnl 10/17 - 10/20 816 LV 3.4 47 47
After Sandy, California
Obama: 53%(PPIC, 10/14-10/21) -> Sandy -> 60%(Final results)
Romney: 41%(PPIC, 10/14-10/21) -> Sandy -> 37%(Final results)
Hillary isn't Obama, TRUMP isn't Romney.
So, There is nothing to feel strange of CA Poll score is 49-39