Chances are the incresingly dominant Catholic (democrat) vote in California is Hispanic. I think there is more at play there than religion. (amnesty, sanctuary cities, freebies, La Raza, etc.)
Except that the Catholic vote has always been Democrat in our history, with them only voting for the Republican President 5 times.
One of those times was to reelect Bush in 2004 after voting against him in 2000, the national Catholic vote went 52% for Bush, while the Hispanic Protestant vote went 56% for Bush.