Just five days to go until the first round of the French parliamentary elections and the nation can barely restrain its indifference. The campaign so far has come down to a contest, mano a mano, between the newly re-elected President, Emmanuel Macron, and his would-be nemesis Jean-Luc Mélenchon, leader of the hastily cobbled-together coalition of the Left known, by virtue of its French acronym, as La Nupes.