For the M2 courses on theTheory of Collective Choice in a Democracy, you can find a syllabus with suggestions for essays. The website of my course in the APE master should be here. I share this course with Antonin Macé.
I also provide some complements to my book in French Le vote et la règle majoritaire: some exercices (with corrections); a text about the original proof of the Condorcet Jury Theorem; and some mathematical precisions.