On November 3, whether the president-elect is John Kerry or George W. Bush, popular pressure for the United States to withdraw from Iraq will increase dramatically. If it's Bush, much of the anger that coalesced behind Kerry will convert to a new antiwar movement of a breadth not seen since Vietnam. If it's Kerry, he could face a split in his own party. A great many Democrats, united behind the goal of ousting Bush, are too polite to say that they're not wild about Kerry's proposed Iraq policy, either. The antiwar sentiment among Democrats powering Howard Dean's candidacy was deep and real. That Dean couldn't convert it to a nomination was merely a personal failure. Since then the situation in Iraq has only worsened. And though Kerry, unlike Bush, has at least promised to get the troops out within four years, that will seem an awfully long time as GIs keep getting killed and Iraq moves no closer to stability. Indeed, as the months and years stretch on, the National Guard, reservists,...