Rather than a handbook for tyrants, Machiavelli wrote The Prince as an ironical work, according to political scientist Erica Benner. Machiavelli was an ardent Republican during the time of the Medicis, de facto rulers of Florence, when the swing towards monarchy was strong. Read this way, The Prince can be seen as a cautionary work into the workings of tyranny and how best to recognize and fight it.
D’Asimov à Star Wars: Représentations politiques dans la science-fiction on JSTOR is a book that covers — as the title already gives away — political systems in popular science fiction universes. It seems to be available only in French, but that’s no problem because, thanks to Duolingo, je peux déjà lire le français.