Newt Gingrich has three marriages and repeated infidelity under his belt, but that doesn't stop him from sounding off about the sanctity of male-female marriage.
It's pretty simple: marriage is between a man and a woman. This is a historic doctrine driven deep into the Bible, both in the Old Testament and in the New Testament, and it's a perfect example of what I mean by the rise of paganism. The effort to create alternatives to marriage between a man and a woman are perfectly natural pagan behaviors, but they are a fundamental violation of our civilization.
Defending Marriage. As President, I will vigorously enforce the Defense of Marriage Act, which was enacted under my leadership as Speaker of the House, and ensure compliance with its provisions, especially in the military. I will also aggressively defend the constitutionality of DOMA in federal and state courts. I will support sending a federal constitutional amendment defining marriage as the union of one man and one woman to the states for ratification. I will also oppose any judicial, bureaucratic, or legislative effort to define marriage in any manner other than as between one man and one woman. I will support all efforts to reform promptly any uneconomic or anti-marriage aspects of welfare and tax policy. I also pledge to uphold the institution of marriage through personal fidelity to my spouse and respect for the marital bonds of others.