This course presents an overview of formal models of domestic politics. It builds directly on the material covered in PS 835, which provides the tools used in applied modeling. The course should be of interest to political scientists in various subﬁelds, including comparative politics and American politics, as well as to social scientists from other disciplines with an interest in politics. More generally, the material should be useful to any students who want practice in modeling, whatever their substantive interests. Students who have not taken PS 835 should have a background in game theory equivalent to what that course oﬀers. In addition, it is important to be familiar at the start of the semester with the basics of diﬀerential and integral calculus.