It is Rick Warren of Saddleback Bible-Teaching Church versus evangelical megachurch Pastor Gregory Boyd, Christian Right versus Christian Left, Christ the redeemer versus Christ the liberator, Christian Faith & Grace versus Christian Works (Christian Socialism & Marxist Activism).  I think Boyd's athiestic historical past is creeping through, a form of Marxism in Christian terms, society (government) responsibility trumping individual responsibility. 

As I say, politics is the public debate over the future of our civilization.  This debate over civilization is conservative values (right) versus liberal ideologies (left), where the words CHURCH and RELIGION are painful ideas implying self-discipline. Most Christians cannot distinquish a value from an ideology.  Most do not know if their world view springs from God, from His biblical truths of way and life,  or if their beliefs are a regression from THEIR own intellectually warped world view, from binge eating from the tree of knowledge.

For Gregory Boyd to say that Christian religion has no place in politics is saying values and principles have no place in the public debate. It is saying that politics must be a debate over ideas.  Detrick Bonhoeffer, the German theologen who Hitler put to death, troubled by how the German Christian culture could stand behind Hitler and NAZI's, came to the conclusion that they were non religious Christians.