It never ceases to amaze how politicians can delude themselves that they are so indispensable and entitled that any scandal should not disqualify them.
Just look at the spectacle of San Diego Mayor Bob Filner and New York mayoral hopeful Anthony Weiner -- if you can stomach it. The honorable thing for both to do would be to spare their cities the turmoil and step aside.
But no, they won't go away. They insist on putting their political ambitions ahead of everything else.
Some might say their fates matter only to residents of San Diego and New York. That would be wrong. If Filner and Weiner survive, it would further lower the bar of acceptable behavior for all public officials. And that would be bad for all of us.
Some people might argue that as long as no laws were broken, personal peccadilloes don't make someone unfit for elected office. But there is a point at which questions of judgment and self-discipline completely undermine whatever positives a politician might offer. Filner and Weiner have crossed that line.
In San Diego on Wednesday, a school psychologist became the third woman to publicly accuse Filner of sexual harassment, claiming that he tried to forcibly kiss her at a restaurant in 2009.
Filner, a Democrat, spent five terms in Congress before becoming mayor last year; unfortunately, these allegations weren't addressed during the campaign so voters could consider them.
On the other side of the country Tuesday, Weiner, also a Democrat, held a cringe-worthy news conference during which he admitted sending sexual images and explicit online messages well more than a year after he had resigned from Congress and had pledged to seek treatment and change his behavior.
That confession blew a hole in his story of redemption and recovery since his 2011 flameout -- the narrative on which he was basing his campaign and which had him doing well in the polls.
Yet, Weiner is out campaigning and vowing to stay in the race.
Filner admits he needs help; even if Weiner won't acknowledge it, he obviously does. Whatever demons they have, they should be exorcised in private, not played out in public.