Landrieu is simply a perennial candidate who happens to have the same last name; the actual Landrieus have very publicly backed Caroline Fayard, even as JBE, who is quite popular, is running across the state for Foster Campbell. The goal here is obviously to split the Democratic vote as evenly as possible (differentiation is being kept minimal in the hopes of splitting the vote evenly, which is presumably why so many Democrats are undecided) and hope the Republicans all manage to drag each other downward. I'd imagine both finish in the high teens or low twenties in the end. The end result of the Kennedy/Boustany/Fleming pileup is unknowable, but I think the chances of 2 Democrats moving forward in a WA-Treas scenario is being underestimated (I noted in another thread that I think Caroline Fayard has a better chance of becoming a Senator than Patrick Murphy).
Campbell is known for being very anti-fossil fuels (so he'd provoke some spending against him from the very powerful oil industry in LA if he were in a runoff and had some serious chance at winning), and Fayard in general is just more conservative and has a less of a record to pin down than he does. I would actually be pretty confident of a Fayard victory in a runoff.
