On 9 April, the left’s late-runner for the French presidency, Jean-Luc Mélenchon, held a rally in Marseille. He called for the formation of a Sixth Republic while his supporters – 70,000 of them, according to his campaign team – roared ‘Résistance! Résistance!’ Five years earlier, almost to the day, he stood in the same place, for the same purpose, sharing the same message at a very similar time: weeks before the first round of the presidential election, with his campaign enjoying a sudden late surge in support. Mélenchon hasn’t changed much since then, but the political atmosphere around him has transformed.