It's interesting that Western red states like Arizona, Montana, and Alaska are still not very religious, while places like Illinois and Maryland are. I think this leads to the possibility of the Great East-West Divide of the 2030s-2050s in American politics.
I could see a scenario where Georgia and North Carolina are actually Safe R at mid-century, while Arizona has become Safe D and Alaska Likely D.
I doubt it, religion everywhere is on the decline, especially with the Millennial generation. By 2030 it's bound to be a much less impactful statistic politically.