Comparative analysis in political science examines political phenomena by juxtaposing cases or variables across units such as states, regions or periods. It encompasses a spectrum of methodological ...

Causal inference has transformed empirical political science. Experiments, natural experiments, instrumental variables, difference-in-differences designs, ...

Machine learning methods have transformed the study of political language by automating the extraction of meaning, sentiment and thematic structure from large text corpora. Supervised learning ...