He won’t win CA.
Not going to happen.
Probably national ads spilling over from swing state NV.
Why bother?
Not every action in a campaign is what it appears to be from the outside. True, this is probably the usual California head fake, but maybe she’ll bite and waist money reacting.
He may not win CA, But Hillary may not either. They have what 5-7 on the ballot there. And many are so turned off Hilary they will protest vote the others. So there is possibility she may not win it.
Trump could be playing to them to keep them from voting for her.