Much of the switching in religious identity in the United States over the past several years occurred among the “nones,” specifically Americans who identify as agnostic or as “nothing in particular.” But the Christian landscape hasn’t remained static in the meantime.
Though academics have long wondered whether the US will follow the secularizing trend found in most of Europe, the greatest shifts among believers have occurred within Christianity, not away from it.
The three-wave Cooperative Congressional Election Study (CCES)—which surveyed the same individuals in 2010, 2012, and 2014, and started with 9,500 respondents—reveals how few Catholics and Protestants have changed affiliations and how many have moved from one denomination (or nondenomination) to another.
During this period, Catholics remained pretty attached to their tradition; they were about half as likely as Americans on average to change their affiliation: 8.8 percent vs. 18.9 percent. ...1