Yes, once the GOP trends to being a party more centered around economics (we're seeing it more with the Young Guns--the Bush era was the high water mark of the religious right)
A battleground California in 40-50 years may be blacks, the Bay, and working-class Hispanics (the latter has heavily integrated by this point) against white suburbia and rural NorCal.
Take a look at what is going on in a bunch of state legislature's, the GOP is still all about shoving religion into every single piece of public policy.
Poll
