This is the age of the YOLO candidate. Are you a terrible person with a clear record of awfulness? You would be perfect for the U.S. Senate! Democrats have found just that sort of guy in Maine; Republicans have found one in Texas. Both would be perfect additions to the large and growing cast of bloviators, morons, and preening hacks that constitute what was once known as the world’s most deliberative body.Both sides justify these candidates along similar lines: “[Institution or policy] has failed [interest or faction that sees its demands as indistinguishable from the national interest]. Our only response...