David Vitter, who leads Democrat Charlie Melancon in the 2010 Louisiana Senate race polls by more than 15 percentage points, looks to extend that lead tonight. The two candidates for the senate seat look to expose each others’ weaknesses in their final debate before the 2010 general elections.

Vitter who has been attacked by the Melancon’s campaign for soliciting prostitution in the past, seems to be winning in the latest polls. The reason? Perhaps because Louisiana appears to be the state that least favors Barack Obama. Vitter has frequently suggested that Charlie Melancon sides with Obama on most issues. Louisiana residence only voted 40% in favor of Obama during the presidential election.

Tonight’s debate may be a heated one between the incumbent Vitter, and the Representative for Louisiana’s 4rd congressional district, Melancon. Both candidates have prior political backgrounds, and a decent education. The 63-year-old Melancon has been extremely active in the 2010 BP oil spill recovery efforts, which wins him a lot of respect from Louisiana residence.

Can Melancon make up ground on David Vitter tonight, or will Vitter expand his lead even further?