Obama partisans and McCain partisans can choose their lessons from the Truman story: a warning against complacency, final courage for a flagging campaign. No one has yet matched the feat. The next chance comes Tuesday.
Robert Schlesinger is a deputy assistant managing editor at U.S. News & World Report. He is also the author of White House Ghosts: Presidents and Their Speechwriters (Simon & Schuster, 2008).