Rush Limbaugh is the leader of the popular entertainment wing of the new conservative tabloid leadership. We all know he's a thrice-married former junkie, but he's mostly a harmless, unlikable slimeball, these days. A rich unlikable slimeball who is currently working as hard as anyone to destroy the Republican party for a generation, but he finished his worst work twenty years ago, when he invented the Fox model of radicalizing the cantankerous old white men who make up the natural audience for conservative media. His audience is still huge, but they're a minority now.