Why go out and vote only for one race and one candidate? I can understand the crossover. I cannot accept two dumps of votes to flip the race twice that only went to the governor and no down ticket. I don’t see a non-nefarious explanation for that.
My guess is that in New Orleans the churches and the community organizers told their folks to go vote for Bel Edwards, and that’s all they did.
Never look at Louisiana with a rational political prism.