NEW FROM PEW RESEARCH CENTER
Ahead of today’s Iowa caucuses, a national Pew Research Center survey conducted in January finds that among registered voters who identify with or lean toward the Democratic Party, Protestants and Catholics are most likely to name Joe Biden as their first choice. Religiously unaffiliated Democrats lean more toward Bernie Sanders, with self-described atheists and agnostics especially more likely to name Sanders or Elizabeth Warren as their preferred choice.