Le Pen and Macron face off in debate, four days before presidential run-off

Since its introduction in 1974, the French presidential debate before the second round run-off has always been the culmination of the campaign. As Emmanuel Macron and Marine Le Pen gear up for their showdown, we look at what the viewers are expecting. We also look at the best punchlines of previous debates, from Valéry Giscard d'Estaing to François Hollande. And finally, a genealogist made some surprising findings when he researched the two candidates' family trees.