Demographically speaking, it should be a good district for the GOP. Issa could be in trouble though because he is such a divisive figure. Ed Royce is the other congressman we should keep our eye on. He could get swept out in an anti-Trump landslide.
What about Valadao, Denham and Knight ?
(I honestly dont know anything about this state)
Denham and Knight might be in serious trouble, but Valadao looks fairly secure.
Yes the "Cook Political Report" just moved Knight's race to "Toss-up" so he is in some trouble.