With Mary Landrieu’s ignominious exit, the Democrats will have lost their last senator in the Deep South. And that’s a good thing. They should write it off—because they don’t need it. I don’t remember a much sadder sight in domestic politics in my lifetime than that of Mary Landrieu schlumpfing around these last few weeks trying to save a Senate seat that was obviously lost. It was like witnessing the last two weeks of the life of a blind and toothless dog you knew the vet was just itching to destroy. I know that sounds mean about her, but I...
