In this paper, I discuss recent developments in political economy. By focusing on the microeconomic side of the discipline, I present an overview of current research on four of the fundamental institutions of a political economy: voters, politicians, parties and governments. For each of these topics, I identify and discuss some of the salient questions that have been posed and addressed in the literature, present some stylized models and examples, and summarize the main theoretical findings. Furthermore, I describe the available data, review the relevant empirical evidence, and discuss some of the challenges for empirical research in political economy.