Literally days before the funeral of Ted Kennedy, the DSCC is playing the character card against David Vitter. From a DSCC email going around:

And last, but certainly not least …
5. David Vitter Confessed to Using D.C. Escort Service. In a revelation embarrassing to the entire state of Louisiana, Vitter in 2007 admitted to being a client of the infamous “D.C. Madam” after his phone number showed up in her records. He later apologized for his “very serious sin.”
One thing’s certainly clear: It’s long past time Louisiana retired David Vitter. As Charlie Melancon says, Louisiana deserves better.

I spoke to Andrew Breitbart today about the e-mail and this is what he had to say:

The first rule of the Democrat-media complex is that only Republican moral failings are fair game. Embracing liberal policies grants a politician carte blanche in his personal or private life. Ted Kennedy is the embodiment of this gold double standard.