April 6, 2011, survey results presented by the Pew Research Center showing that nearly two-thirds of white evangelical Protestants (64 percent) say helping to protect Israel should be a very important policy goal for the U.S. in the Middle East, compared with 34 percent of white mainline Protestants and 36 percent of white Catholics.

April 11, 2013, report by the Congressional Research Service which provides an overview of the United States’ history of foreign assistance to Israel.

David Campbell is a political science professor at the University of Notre Dame who has written widely on religion and politics. His books include, as editor, A Matter of Faith: Religion in the 2004 Presidential Election and, as co-author, American Grace: How Religion Divides and Unites Us.

In 2004, political conservatives launched another Republican-backed initiative to attract Catholics: a National Catholic Prayer Breakfast, designed as an alternative to the traditional National Prayer Breakfast, which has a largely evangelical Protestant character. The National Catholic Prayer Breakfast became a premier event for Republican leaders, and President Bush addressed the gathering on April 7, 2006.

Peter Wehner is a senior fellow at the Ethics and Public Policy Center and a former deputy assistant to President George W. Bush. Wehner wrote a Dec. 31, 2007, National Review article titled “Among Evangelicals, a Transformation.”

Mark Rozell is a professor of public policy at George Mason University in Arlington, Va., and co-editor of Religion and the American Presidency, Religion and the Bush Presidency and The Values Campaign?: The Christian Right and the 2004 Elections.

Read a Jan. 18, 2008, Los Angeles Times story about the 2008 elections and the split between conservative and liberal ideologies among Evangelicals.

Read “The Evangelical Crackup,” an Oct. 28, 2007, story in The New York Times Magazine about the travails of the Christian right during the  election season.

Read a Jan. 24, 2008, Time magazine story, “Is Dobson’s Political Clout Fading?,” about Focus on the Family leader James Dobson.