South Park takes a shot at the republican party in this brief clip.
Then go read Bilmon: The Soldier Who Saw Everything Twice
Today's key document, I think, is former Sen. John Danforth's op-ed in the New York Times, which can be read as both his own personal declaration of independence from the religious right, and a manifesto calling upon the Republican Party to do likewise.
"But in recent times, we Republicans have allowed [our] shared agenda to become secondary to the agenda of Christian conservatives. As a senator, I worried every day about the size of the federal deficit. I did not spend a single minute worrying about the effect of gays on the institution of marriage. Today it seems to be the other way around"...read on