It’s a development of tremendous impact, one that will ripple across the political landscape at every level — and especially in presidential politics. Why? Because of what it means for the God Gap — the idea that the Republican Party is the one that fights for the rights of religious individuals (primarily Christians), while Democrats have become increasingly secular over time.
People are not fleeing organized religion at equal rates across the United States. Instead, there are regions of the country where religious adherence is still relatively robust, while other areas have seen a wholesale abandoning of organized religion. We know this because of the tireless work of the Association of Statisticians of American Religious Bodies. Every 10 years, they contact as many religious denominations as they can and ask to see their official membership records. This data provides an unprecedented look at where religion is growing and declining in the United States.