Chapter 29 Computational Methods and Models of Politics In this chapter we assess recent contributions of computational models to the study of politics. We focus primarily on agent based models developed by economists and political scientists. These models address collective action problems questions related to institutional design and performance issues in international relations and electoral competition. In our view complex systems and computational techniques will have a large and growing impact on research on politics in the near future. This optimism follows from the observation that the concepts used in computational methodology in general and agent based models in particular resonate deeply within political science because of the domains of study in the discipline and because early findings from agent based models align with widely known empirical regularities in the political world. In the process of making our arguments we survey a portion of the growing literature within political science.