From a story on politico.com by Ryan Burge headlined “The Religious Landscape Is Undergoing Massive Change. It Could Decide the 2024 Election.”:

One of the most significant shifts in American politics and religion just took place over the past decade and it barely got any notice: the share of Americans who associate with religion dropped by 11 points.

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.