I remember the precise moment when I became convinced that this presidential campaign was going to be the best I’d ever covered. It was Saturday afternoon, Dec. 8, 2007. I stood in the lobby of Hy-Vee Hall, the big convention center in Des Moines, watching an endless stream of men, women and children come down the escalators from the network of skywalks that link the downtown business blocks of Iowa’s capital. They were bundled in winter coats against the chilly temperatures, and the mood was festive — like a tailgate party for a football game. But the lure here was not a sporting contest; it was a political rally.
