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

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.

Michael Galloway is the chairman of Your Catholic Voice, a conservative Catholic group that supports a constitutional ban on same-sex marriage.

Pastor John C. Hagee is the founder and senior pastor of Cornerstone Church in San Antonio, Texas, and the founder and president of John Hagee Ministries.

George Mamo is the executive vice president of the International Fellowship of Christians and Jews and executive director of Stand for Israel, an IFCJ project.

Steve Strang is the founder and CEO of Charisma Media (formerly Strang Communications).

The New York City-based organization Freedom to Marry is working to obtain same-sex marriage rights nationwide and to overturn the federal Defense of Marriage Act. Evan Wolfson is president.

Rabbi Eric Yoffie is the president emeritus of the Union for Reform Judaism.

David Klinghoffer is a senior fellow at the Discovery Institute and the editor of Evolution News & Views.