In a last minute appeal for campaign cash Wednesday, Rep. Charlie Melancon's Senate campaign sent out a fundraising email that referenced former Vitter aide Brent Furer. 

"Last week, ABC News reported that David Vitter protected an aide who threatened, stabbed, attacked and held a woman hostage," Melancon campaign manager Bradley Beychok wrote in the email.  

The fundraising appeal also includes a link to a new web video released Wednesday that markedly steps up the Melancon campaign's attack on Vitter over the incident. 

Ahead of Wednesday's second quarter fundraising deadline, the campaign of Sen. David Vitter (R-La.) already announced that it raised more than $1 million for the quarter. 

The latest Rasmussen poll that had Vitter leading Melancon 53 percent to 35 percent. A PPP survey from June 9 had Vitter up 46-37.