The Pew Research Center, which issues a report on the religious makeup of Congress every two years, just released its latest version this afternoon, taking data from a CQ Roll Call questionnaire.
It’s overwhelmingly Christian with a smattering of Jews, Muslims, Hindus, and followers of other faiths.
Anyone could have figured that out. Because Christians are badgered to vote and mostly vote as a block according to their faith, they win elections.