Sen. David Vitter (R-La.) used the release of his first quarter fundraising numbers Wednesday to attack his Democratic opponent.

"The incredible support I am receiving is making it more clear that Louisianians are standing with me in my fight to hold President Obama and his liberal allies like Charlie Melancon accountable," Vitter said in a statement.

Vitter raised some $1 million in the first quarter to bring his cash on hand to $5 million, which he noted was "far more" than Sen. Mary Landrieu (D-La.) had raised by this point in 2008. That year Landrieu spent more than $10 million on her campaign.

Rep. Charlie Melancon (D-La.), who has yet to release his first quarter numbers, recently scaled back his responsibilities in the House in order to focus on his Senate campaign. He's currently on a "jambalaya and jobs tour" of north and central Louisiana.