Religious affiliations of U.S. congressmen

Note that the number of Americans who lack affiliation with any church is about 48 million or so. The number of members of Congress who are willing to admit lack of same is: one [Pete Stark]. Apparently Rick Warren speaks for great big chunks of America when he says, "I could not vote for an atheist."

Text and graph (click to enlarge) from Mother Jones. Primary and more detailed data and analysis at Pew Forum.