I would add one item, a whole lot of dem voters are white.
I think the actual division is not brown/white, it is govt workers vs private sector.
The govt workers fail to realize where their bucks actually originate, hence the crash (which is occuring as we speak) will be a surprise to many who feed from the trough.
Yes there are a number of white voters here in CA who vote Democrat-—primarily gays, feminists, Jewish voters, union members. Without those subgroups, 90% instead of 60% of white voters would be voting GOP.