Isn't the June primaries over in California ?
No they
aren't
There are about 760,000 mail ballots outstanding, 130,000 provisionals, and 35,000 ballots set aside for hand-counting, etc.
California requires mail ballots to be returned on election day, but they have to be processed, checking signatures, etc.
Mail ballots in California may be more Republican, since most mail ballots are for permanent by mail voters, and Republicans tend to have more established residences or live where the USPS can be trusted to deliver the mail, and not having it stolen. Los Angeles particularly has low overall participation because they have low overall mail voters.
Looking at where the outstanding votes are, it looks quite likely that Betty Yee will squeak into second.