Last night Jim Wallis of the Sojourners Community was on Jon Stewart pushing his new book God's Politics: Why the Right Gets It Wrong and the Left Doesn't Get It. The left has been trotting Wallis out, despite his excellent critiques of traditional political categories of left vs right, probably to get into the religion arena. I'm not convinced that one needs to be a person of explict faith to be an effective political leader, but Wallis is an influencial figure within progressive Christianity, so I think that his will a fresh voice to those who only heard the rantings of Jerry Falwell, Tim Lahaye, and Rick Warren.
Wallis did an excellent job on the show, in presenting an alternative Christian face to the angry Religious Right that seems to dominate the public discourse. The church need such progressive, evangelical voices in the public arena to bring attention to the gospel call of helping those in need as a way of serving Jesus (ala Matt 25).