I am on the ground here in So Cal. I can assure Mr. Trump California is NOT in play. Aside from the few, unpopulous Republican bastions in this state that Trump is widely reviled here and the Clintons are largely beloved.
I really would really hate to see Trump waste valuable time and money on a lost cause here. Plus he puts his life at risk coming here. Most people here are nuts.
I grew up in Chino and it was a very conservative place back then.