In 1864, with the Civil War raging, millions of Americans voted in the presidential election and, as Carl Sandburg wrote, the balloting went on "in quiet and good order." So it was troubling to hear reports this week that the Bush administration and a federal elections body were talking about whether this year's election could be postponed in the event of a terrorist attack. Fortunately, elected officials from both parties quickly denounced the idea, and the administration said a postponement would not happen. At least raising the issue now allowed the nation to consider it in a moment of calm,...