A rousing speech from Michelle Obama and we’re off. With the conventions in full-bloom, we will be treated to two weeks of constant coverage. In fact, with 4,000 delegates at the Democratic Convention and 15,000 members of the media, the convention in Denver is as much a media event as a political one — and that may be an understatement. The same will be true when the Republicans gather next week in Minneapolis-St. Paul. With every aspect of the agenda meticulously scripted in advance, the only drama will be scripted and produced, not spontaneous, and there will be as many surprises as there were at the opening and closing ceremonies of the Olympics in Beijing: none