Well, in a way yes. During an election day and the day before, you are not allowed to push official communication (ie a political party can tell you "Go vote" but not "Go vote for us because we will put a stop to immigration") be it via a website, email, mail, etc. See https://presidentielle2022.conseil-constitutionnel.fr/l-elec.... So a sponsored post from a political party appearing in your timeline would be an issue due to the platform if it ignores these rules.