See a Sept. 29, 2006, Catholic News Service story, “What’s a voter to do? Election guides offer different answers” The CNS story focuses on Catholic groups but provides an overview of the issue.

“Establishment Clause: Tax exemptions” is an article from the First Amendment Center detailing tax exemptions for religious groups, including relevant court cases.

“Preaching Politics from the Pulpit: 2012 Guide to IRS Rules on Political Advocacy by Religious Organizations” is a report released in October 2012 by the Pew Forum on Religion and Public Life, a project of the Pew Research Center.

Jan. 29, 2013, The Dallas Morning News blog post which takes offense to the belief that the religious left needs to be more combative to gain traction in the national conversation.

Jan. 11, 2013, The Washington Post article on what the religious left must do to gain more national and media attention.

Transcript of an April 16, 2013, letter to President Barack Obama questioning the American drone program signed by several progressive religious leaders.

May 13, 2013, Sightings article discussing the Religious Left.

Written by John Danforth (Viking Adult, 2006). Danforth, a former Republican senator from Missouri and an ordained Episcopalian minister, speaks out against the conflation of political agendas with religious views and the religious right’s focus on wedge issues.

Written by Gregory A. Boyd (Zondervan, 2006). Boyd, a theologian and pastor of Woodland Hills Church in St. Paul, Minn., discusses his worry over the growing alignment of Christianity and the right-wing ideology of the Republican Party.