Conservatives don't get that it's not about religion.
Getting more religion--getting all preachy--isn't going to help Sanford, though I'm sure that's what he thinks.
When these guys fall they turn even more religious than before. It's as if they think that if they were more righteous to start then they never would've committed the "sin." They use it as a tool, when it's convenient, to save their butts.
Well, fact is, less self righteousness and a little more humilty--without the call that everyone in your path turn religious--will do the trick.
It doesn't take religion to tell you that you shouldn't cheat on your wife and that you shouldn't leave your responsibilities high and dry.
A little less religion and little more common morality is what's called for.