Fascinating article from the NYT:
Most Americans choose a political party before choosing whether to join a religious community or how often to attend religious services.
Faith often becomes a peripheral concern in adolescence and young adulthood — precisely the years when we tend to form stable partisan attachments. Religion typically becomes relevant again later, after we have children and start to think about their religious upbringings. By that time, our political views are set, ready to guide our religious values and decisions.
Michele Margolis, 'When Politicians Determine Your Religious Beliefs'