This is a fascinating interview (on Fresh Air by Terry Gross) of former Republican Senator and US Representative to the United Nations, John Danforth. I highly recommend you listen to it:

Preface/background included for the interview by NPR/Fresh Air:

A retired Episcopal priest, Danforth represented Missouri in the Senate for 18 years. He is also the former U.S. ambassador to the United Nations. Recently, Danforth has been outspoken about the Christian conservative bent of the GOP, writing that "Republicans have transformed our party into the political arm of conservative Christians."