Gregory Hall is president and CEO of Warner Southern College in Lake Wales, Fla.

Joseph A. Pipa, Jr. is president of Greenville Presbyterian Theological Seminary in Taylors, S.C., as well as a professor of historic and systematic theology.

Read a Feb. 25, 2009, post at the blog of Catholic News Service about Joshua DuBois’ address that day to the annual Catholic Social Ministry Gathering in Washington, D.C.

Paul de Vries is a speaker, author and president of New York Divinity School in New York City and an at-large member of the governing board of the National Association of Evangelicals.

The Rev. Clive Calver is senior pastor at Walnut Hill Community Church in Bethel, Conn., and former president of World Relief.

Creation Justice Ministries (formerly the National Council of Churches Eco-Justice Program) works in cooperation with national bodies of Protestant denominations, Orthodox communions, regional faith groups and congregants to protect and restore God’s creation.

CNN has exit poll data: Click on the “Results” tab and go to “Exit Polls.” The second page has most of the breakdowns by religion.

According to this Dec. 19, 2008, survey by the Pew Forum on Religion & Public Life, most members of Congress are Protestant, as is most of the country.

An Aug. 27, 2007, Christian Science Monitor profile of Biden, “A frank and abiding faith,” is a good starting point for exploring his personal religious views.