At Commentary, John Steele Gordon notes that Massachusetts Democrats tinkered with the procedures for filling U.S. Senate vacancies not once but twice in the unprincipled pursuit of short-term political advantage. At least one of these changes, and arguably both, wound up backfiring on them. You'd think there must be some lesson here, wouldn't you?

P.S. And David Frum points out that on the subject of the Senate filibuster, for similar reasons, some on the conservative side come off in a less than favorable light.