Read a Feb. 6, 2012, story in The New Republic by religious studies scholar Randall Balmer about the impact of Mitt Romney’s religion on his campaign.

Read a Feb. 8, 2012, article in The New Republic on the potential impact of Mitt Romney’s religion on his politics.

A December 2011 national survey conducted for The Salt Lake Tribune found that about one in four evangelicals would be uncomfortable voting for a Mormon, even though they and Mormons think alike on many social issues.

The Berkley Center for Religion, Peace & World Affairs, based at Georgetown University, has a website that tracked the religious rhetoric of leading candidates for the 2012 presidential election.

Romney and Obama discuss their faith in separate interviews in the summer 2012 issue of Cathedral Age magazine, the quarterly publication of Washington National Cathedral.

The Pew Forum on Religion & Public Life offers extensive resources on religion and politics in the 2012 campaign, including candidate profiles and analyses of current and past trends among religious voters.

Gregory A. Smith is the associate director of research at the Pew Research Center. He’s an expert on religion in America. Arrange interviews through Anna Schiller.

Melani McAlister is an associate professor of American studies and international affairs at George Washington University in Washington, D.C. She participated in a February 2008 roundtable discussion about American evangelicals and the 2008 primaries at Princeton University’s Center for the Study of Religion. She is also at work on a book about American evangelicals and global vision.

Read a Nov. 4, 2012, NBCNews.com article that found that 1,600 pastors across the U.S. violated the long-standing ban on political endorsement by churches in October of 2012.