A cold climate does seem to have an liberalizing effect on white people
generally true but L.A. is pretty liberal.
Are there any non-Hispanic, non-gay, non-Jew, run of the mill white people there? A large enough population to make any sort of generalization anyway?
Most of West L.A./Santa Monica is fairly liberal and White, but this is more a factor of urban density than anything else.
It's true that small town/rural liberalism seems nonexistant in warmer areas, except maybe in parts of Hawaii, Asheville, and New Mexico. Am I missing anywhere else?