"Like the U.S. public, Protestants make up more than half (57 percent) of the 112th Congress, and Catholics constitute roughly a quarter (29 percent)"

Pew Forum: Religious profile of 112th Congress remains stable“Baptists, by contrast, are underrepresented, according to Pew’s study: They make up nearly 17 percent of the population, but less than 13 percent of Congress.”