Does politics need religion?

I know that many people in the free world, including many on fluther would answer this with a resounding no. However, there are still many people who would say that politics not only needs religion, but needs more of it.

Rabbi Eric H. Yoffie states that politics needs religion for moral guidance, and that problems only arise because of politicians using religion for their own ulterior motives. Brendan Sweetman in his book titled why politics need religion Sweetman makes similar arguements to that of Yoffie. Here is chapter one of his book.

Try to read at least the brief Huffington Post article before responding if you can. Do these religionists make good points, or should religion stay out of politics?