For the first time, a poll has put Emmanuel Macron ahead of the far-right's Marine Le Pen in the first round of France's presidential election. The 39-year-old centrist, who served as François Hollande's economy minister, would rout Le Pen in a run-off. And then what? June legislative elections will follow the presidential poll. Would we be headed for a hung parliament, or can Macron muster from scratch a new kind of coalition that can reform France?