The only kind of "morality" that this movement knows or embraces is politically exploitative, cost-free morality. That is why the national Republican Party rails endlessly against homosexuality and is virtually mute about divorce and adultery: because anti-gay moralism costs virtually all of its supporters nothing (since that is a moral prohibition that does not constrain them), while heterosexual moral deviations – from divorce to adultery to sex outside of marriage – are rampant among the Values Voters faithful and thus removed from the realm of condemnation. Hence we have scads of people sitting around opposing same-sex marriage because of their professed belief in "Traditional Marriage" while their "third husbands" and multiple step-children and live-in girlfriends sit next to them on the couch.

The fact is that Senator Craig pled guilty to a crime, and therefore was convicted of a crime. Senator Vitter has not been charged with a crime, let alone convicted of one. So there's a pretty big distinction here.