Rasmussen (10/5, likely voters, no trend lines):
Charlie Melancon (D): 36
David Vitter (R-inc): 46
Some other: 5
Not sure: 13
Charlie Melancon (D): 33
Jay Dardenne (R): 46
Some other: 6
Not sure: 15
(MoE: ±4.5%)
Rasmussen's first look at the Louisiana Senate race shows us about what I'd expect -- Republican incumbent David Vitter holds a 10-point edge over Democratic Rep. Charlie Melancon. In fact, it's the same spread as a 47-37 internal poll by Anzalone Liszt last month that the Melancon camp was sufficiently pleased with to release. Vitter is below 50, so it's not an insurmountable edge, but one that indicates the severity of Louisiana's current lean toward the Republicans (and probably also that Melancon isn't known well in the northern parts of the state, which is something that can be fixed over the next year).
Republican Secretary of State Jay Dardenne hasn't made any moves toward running against Vitter in the primary, although he's the one prominent figure left in the state who hasn't ruled it out either. It turns out he matches up a little better against Melancon than does Vitter (apparently, not getting caught in a prostitution ring is worth an additional 3% in Louisiana). Also, apparently, being a Democrat is a bigger sin in Louisiana these days than being a john, if you compare Vitter's 56/34 favorable vs. Melancon's 43/39.
http://www.swingstateproject.com/diary/5695/lasen-vitter-leads-melancon-by-10