Telford Work is assistant professor of theology at Westmont College, Santa Barbara, Calif. He has written frequently on evangelicals, and he maintains a personal Website.

Chris Soper is a professor of political science at Pepperdine University in Malibu, Calif., and the author of Evangelical Christianity in the United States and Great Britain: Religious Beliefs, Political Choices.

J.P. Moreland is a philosophy and theology professor at the evangelical Talbot School of Theology of Biola University in La Mirada, Calif. He has also author of thirty-five books, including Does God Exist? (Prometheus) and over 75 articles.

That All May Freely Serve is a progressive group within the PCUSA which lobbies for a Presbyterian Church that is inclusive fully inclusive. Contact Ray Bagnuolo.

More Light Presbyterians is a progressive group of individuals and congregations within the PCUSA which describes itself as “a network of people seeking the full participation of lesbian, gay, bisexual and transgender people of faith in the life, ministry and witness of the Presbyterian Church (USA).” Contact interim executive director Patrick Evans.

The Covenant Network of Presbyterians is a progressive group within the PCUSA working towards a fully inclusive church. Contact executive director Brian Ellison.

Presbyterians for Renewal is a conservative renewal movement within the PCUSA formed in April 1989.

The Presbyterian Coalition is a conservative movement within the Presbyterian Church U.S.A. formed largely in response to the question of ordination of gay clergy.

ECO is a conservative Presbyterian denomination founded in January 2012.