Now that Republican senatorial candidate George Allen has conceded defeat in Virginia, the U.S. Senate, like the House before it, has been delivered to the Democrats. Pundits are poking through the entrails of the exit polls in search of reasons for the GOP debacle, and many are obvious: the fact of the seemingly intractable Iraq war; the fact that, for the past decade, Republican congressmen have allowed themselves to be seduced by the Dark Side of politics, and have thus abandoned their principles for perks and pork; the fact that, even with total control of all three branches of...