Does anyone really think that Clinton is going to win a semi-closed primary in California by more than she won a closed primary in New York in the end? I doubt it.
As for Cruz, his support may be collapsing.
There are more non-whites in California, to be fair. She'll probably get NYC or Philly numbers in LA county, and the Bay Area isn't all Marin and Berkley so it won't be the Sanders blowout some people are thinking it'll be. Oakland, Solano, Napa, even Yolo should be Clinton territory.
Yolo County resident. I doubt that it'll go for Hillary. There's too many college students and liberals in Davis for it to go to Clinton. Solano and Alameda (Oakland) definitely will vote for Hillary though, and Napa wouldn't surprise me if it does as well.