I realize my post here is not PC, and I feel very uncomfortable with it. So I do apologize.
But to assume it is the religious extremes that are controlling politics may be an overstatement.
Here is a pie chart of the religions in the US:
[ATTACH]

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There are currently 9 sitting members of the US Supreme Court
Here are the religious affiliations of those US Justices
Catholic
Catholic
Catholic
Catholic
Catholic
Catholic
Jewish
Jewish
Jewish
Does this non-proportional representation have an effect ?
I suspect it does, but in more subtle ways.