Katherine (Stenger) Knutson is an assistant professor of political science at Gustavus Adolphus College in Saint Peter, Minn. Her focus is on the effect of religious interest groups on American politics.

Mark S. Scarberry teaches law at Pepperdine University in Malibu and specializes in freedom of religion.

David B. Cruz teaches law at the University of Southern California in Los Angeles and specializes in law and religion.

Chuck Currie is a United Church of Christ seminarian and advocate for the homeless in Portland, Ore. He is also an active blogger and frequently writes on religion and politics.

Martin Rutte is a Santa Fe-based consultant on spirituality in the workplace. He co-wrote Chicken Soup for the Soul at Work (Health Communications, 2001).

Marc Dollinger is a professor of Jewish studies at San Francisco State University. His interests include separation of church and state, and Jews and public policy. He contributed an article on Jews and the Democratic Party to the Encyclopedia of American Religion and Politics.

Christine Sierra is an emeritus professor of political science at the University of New Mexico in Albuquerque, where she also is the director of the Southwest Hispanic Research Institute.

Roberto Corrada, a professor at the University of Denver College of Law, is an expert in the legal history of religion in the workplace issues.

Abed Hammoud formed the Arab American Political Action Committee in 1998 in Dearborn, Mich., to consolidate and increase Arab-American voting power.