I thought Northern California (Sacramento) and and East California (is that even a term) was conservative?
Has the state been gerrymandered that badly?
What do you think? You think only Republican states gerrymander? Both parties do it as much as they possibly can.
It seems that the problem is not gerrymandering but demography. We're seeing a heavy influx of immigrants from Asia and Latin America, and most of them vote Democratic.
As to Eastern California, much of it remains conservative, although Mexican immigrants have turned Imperial County blue, and Sierra Club types have done the same to Mono and Alpine Counties.