The Catholic vote has grown much in California, and moved it left as the Protestants no longer dominate the vote.
For example 2004, a year in which California had strong pro-life issues on the ballot.
Well to be more accurate, you might point out that the growth of “Catholics” in California is largely fueled by the illegal Hispanic influx; people who are more likely to vote for the political party enabling their criminality, than because of any religious beliefs.
Similarly nationwide, Catholicism when viewed with raw statistical data suffers more than any other religion from inertia. That is, there are unfortunately huge numbers of people who were born (though not even necessarily raised) Catholic, who when forced to identify a religion on a survey, or some other statistical metric, still select Catholicism. They are no more Catholic than you.