WRT Trump, he got ~1/3 (33.33...%) of CA's vote in 2016 and 2020. He may do better, because of the realities of Biden, but I would be VERY surprised if he gets more than 40% of CA's 2024 vote.
WRT DiFei's former Senate seat, it was a mild surprise that an R will be on my November ballot, Steve Garvey (the other candidate will be Schifftyroo). For all of Schifftyroo's lying and crazy, I would still be very surprised if Garvey wins (he MIGHT get a little over 45% at best would be my optimistic guess).
I haven't been represented in the legislature or Congress for decades. My "choices" for the Assembly were probably-reliably-Prog Dems and a Dem-Lite alleged R (Pro-Abortion and -same-sex "marriage", and Warmista); I left that race blank on my ballot.
The political pendulum might be swinging back from crazy-left, but it's not gone far, IMO.