The new, 116th Congress includes the first two Muslim women ever to serve in the House of Representatives, and is, overall, slightly more religiously diverse than the prior Congress.
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But by far the largest difference between the U.S. public and Congress is in the share who are unaffiliated with a religious group. In the general public, 23% say they are atheist, agnostic or “nothing in particular.” In Congress, just one person – Sen. Kyrsten Sinema, D-Ariz., who was recently elected to the Senate after three terms in the House – says she is religiously unaffiliated, making the share of “nones” in Congress 0.2%.
When asked about their religious affiliation, a growing number of members of Congress decline to specify (categorized as “don’t know/refused”). This group – all Democrats – numbers 18, or 3% of Congress, up from 10 members (2%) in the 115th Congress. Their reasons for this decision may vary. But one member in this category, Rep. Jared Huffman, D-Calif., announced in 2017 that he identifies as a humanist and says he is not sure God exists. Huffman remains categorized as “don’t know/refused” because he declined to state his religious identity in the CQ Roll Call questionnaire used to collect data for this report.
