If I thought that every politician would be held to that standard, i'd agree with you, but we both know they're not.
Since every President goes to a Church of some type should they all be asked personal and rigorous questions on if they follow every one of that Church's precepts?
The right sure had a big problem with Obama's church in Chicago, didn't they? He got hounded by tons of questions.
Likewise, Perry and his bigoted, xenophobic, anti-homosexual doomsday extravaganza that he held in bumfuck Texas prior to his candidacy. He's had to deal with his association with the assclown that ran that show.
newt wants people to vote on their perception of his morality and family values.
He knows this, and
you know this. That was his calling card in the nineties, and that is one of the major platforms of the GOP. It is only right, then, that he his challenged by his actual practice of such values, not simply accept the fact that he plays mere lip service to them to garner votes.
Him challenging a moderator for asking a fair and relevant question based on Newt's own purported platform is
not the behavior of an experienced master-debator, as he so clearly portrays himself (I mean, that's his main platform--I can out-debate Obama!). The audience acting like a pack of clowns, thinking he is somehow displaying a master-debator's skill, speaks volumes for the yokels that easily ignore is multiple moral transgressions despite his claim to be the moral candidate.