Donkeys and Elephants on Parade.

So you think this summer's political conventions will be a snore? You're probably right. When the Republicans meet in Philadelphia (July 31-August 3) and the Democrats in Los Angeles (August 14-17), the most important thing they'll do--in four endless days each--is trumpet two four-letter names we already know.

Conventions once featured fierce debates and unpredictable votes (see History, page 30). Not anymore. "These days, a convention is a scripted show--right down to the applause," says Larry Sabato, a University of Virginia professor of government...