CA Republicans are the most right-wing in the country, so of course they'd do something extreme, but this is just terrible. I doubt a Homocaust will get any votes outside of extremists.
Also, this makes me question what CA would be like if the parties were nearly the same like in Rhode Island.
They are?
Texas and perhaps Oklahoma are somewhat close, but many Republicans in CA either live in a bubble (in the south) or live in such close proximity to the most actively liberal region of the country so take the full-on opposite approach (in the north). The former is likely a bigger explanation as to why but I can't say for sure. The north is probably where some moderation from the party comes in.
States like Colorado (Colorado Springs) and some of the south have likely have further right Republicans, but the median Republican is a more accurate representation so I think CA and TX can safely be called the two most right wing.
I have a hard time believing the average Mississippi/Alabama Republican is more liberal than the average California Republican. I mean, 65% of Mississippians said in a 2000 poll (I think?) that AIDS was a punishment from God, so that would've meant 80%+ of GOPers.