Evan Wolfson is a lawyer and executive director of Freedom to Marry. He argued the Boy Scout case before the Supreme Court, as well as the Hawaii marriage case.

Charles A. Cesaretti is executive director of the Center for Sexuality and Religion, which helps faith communities sexual spiritual health and justice. It is based in Wayne, Pa.

Lou Sheldon is chairman of the Traditional Values Coalition, a conservative group that wants a constitutional amendment that would ban same-sex marriage, ban same-sex unions and ban gays from receiving benefits of any such unions.

Beverly LaHaye is founder and chairman of the Concerned Women for America, a conservative group that opposes same-sex marriage.

Juan E. Campo is associate professor of religious studies at the University of California, Santa Barbara. He specializes in the comparative study of Islam, particularly in the Middle East and South Asia, and teaches courses on Islamic tradition; religion, politics and society in the Persian Gulf region; Islamic mysticism; and modern Islamic movements.

Glenn Stanton is the director for Family Formation Studies at Focus on the Family in Colorado Springs.

Cecilia Elena Rouse is a professor of economics and public affairs and dean of the Woodrow Wilson School of Public and International Affairs at Princeton University.

Maggie Gallagher is president of the Institute for Marriage and Public Policy in Washington. D.C. and a co-author of The Case for Marriage.

Clive R. Belfield is associate director of the National Center for the Study of Privatization in Education at Teachers College at Columbia University in New York. He also is an assistant professor of economics at Queens College, City University of New York.