Historically, populist movements have thrived in regions of economic distress or among demographic groups that are enduring hardship. This appears to be the case among France’s youth, especially in the deindustrialized northeast. According to a recent Ifop poll, 39 per cent of 18-to-24-year-olds support the FN. Mr. Macron’s centrists attract only 21 per cent of the youth vote, and Mr. Fillon’s conservatives pull in just 9 per cent. Ensuring that young people come out in force is crucial for Ms. Le Pen’s electoral success.