Many who read the polls might say 2024 seems like the year of living dangerously. No one is arguing about who's got the momentum, only four days out from snap legislative elections here in France and on the eve of the first presidential candidates' debate in the United States.

French voters can argue that they've tried all the others, so why not the far right? They also assume that Marine Le Pen's party will be less Eurosceptic once confronted with the hard reality of governing, like what has happened in Italy with Giorgia Meloni.

But how, then, to explain Donald Trump's brand of politics? He is not untested. On his watch, supporters tried to overturn the outgoing US president's electoral defeat by force on January 6, 2021. Why does he have the momentum?

President Emmanuel Macron has been blasted for gambling away his relative majority on a snap election that does not give citizens enough time to reflect. Americans will have had four long years to do so. In both cases, are the one-third of voters solidly behind illiberal parties bigger risk takers than Macron? Or do they feel that they have nothing to lose?

Produced by Aline Bottin, Rebecca Gnignati and Juliette Brown.