Here is a poll that shows that the political system is not so tightly coupled with the religion system.
Just 25 percent of Americans say it’s very or extremely important that a candidate has strong religious beliefs, according to the poll. Only 19 percent consider it very or extremely important that a candidate shares their own beliefs, and nearly half say that’s not very important or not important at all. . . .
Although that 25% still represents a lot of voters, more people are starting to realize that morality, integrity, trustworthiness, etc., and religion need not be linked. An atheist or a member of some other religion might actually be an ethical, trustworthy person. Politics and religion are not tightly integrated, which means that a person can opt out of religion but still participate in politics. Inclusion in politics does not require inclusion in the religion system. Political communication and religious communication need not be integrated. This is a basic fact of functional differentiation.
I think the best hope for religion as a social system is antinomianism. There’s no reason religion has to be tied to morality. Nirvana has nothing to do with morality. I don’t think the Sermon on the Mount has much to with morality either.