Most surveys I've seen suggest that legal immigrants despise illegals.
These are all fair points. I think that a typical California Democrat would be regarded as a hard-core communist here in Texas. :) It did help Nixon and especially Reagan that both were Californians. It didn't help Ford or Bush 41, but they won there as well. Bush 41 barely won in 1988 (I think it was 51-49, something like that).
I can add that Ford never won any statewide office. He was a Congressmen from Michigan before he was appointed Veep. Ditto for Bush 41, although he was the Veep before winning California and 40 other states in 1988.
It still seems to me that California GOPers are much more hostile to Hispanics than GOPers in other states with large Hispanic populations. Even if California is Rat-infested for other reasons, I don't think that GOPers there have exactly endeared themselves to Hispanics. It seems to me that the difference between the GOP attitude there, as opposed to the one here in Texas, is night and day.