Since his famous 2007 press conference at which he admitted to a "very serious sin," Sen. David Vitter has kept mum about the prostitution scandal that has dogged his career. As he's run for Louisiana governor, however, his opponents and others have raised the matter again. This weekend, an ad by Vitter's opponent, state Rep. John Bel Edwards, made direct reference to prostitutes and drew nationwide attention.

Now the Vitter camp seems to have taken another tack, with an ad called "Hard Times."

"Fifteen years ago, I failed my family," Vitter says, addressing the camera. "but found forgiveness and love. I learned that our falls aren't what define us, but rather how we get up, accept responsibility and earn redemption."