So far, Rudy Giuliani’s scandalous personal life has been largely ignored by major media outlets. One of these days, that’s going to change, and today may be the day.

Giuliani is the first thrice-married serial adulterer to ever even run for president, a fact that most reporters have ignored entirely. When the Village Voice reported a few months ago that Giuliani kept his emergency command center in 7 World Trade Center, in part so he could maintain a convenient love nest for his extra-marital affairs, the media, once again, yawned.

OK, but how about this one?

As New York mayor, Rudy Giuliani billed obscure city agencies for tens of thousands of dollars in security expenses amassed during the time when he was beginning an extramarital relationship with future wife Judith Nathan in the Hamptons, according to previously undisclosed government records.

The documents, obtained by Politico under New York’s Freedom of Information Law, show that the mayoral costs had nothing to do with the functions of the little-known city offices that defrayed his tabs, including agencies responsible for regulating loft apartments, aiding the disabled and providing lawyers for indigent defendants.

I realize the common-sense rules and norms don’t apply to Republican presidential candidates, but a story like this one could, and very well may, end Giuliani’s presidential campaign.

Even if one is inclined to ignore the character questions surrounding Giuliani’s shameless and repeated adultery, the scandal here goes much further, including financial irregularities, misuse of official city resources, and an attempt to conceal the mayor’s conduct.

A Giuliani campaign spokesperson declined to comment on any aspect of the story, including the travel documents or the billing arrangements. It’s just as well. Some things are just un-spinnable.