Adapted from the groundbreaking Principles of Comparative Politics, now in its third edition, Foundations of Comparative Politics presents a scientific approach to the rich world of comparative inquiry, research, and scholarship, providing students a guide to cross-national comparison and why it matters to them. Foundations introduces students to the key questions in comparative politics using tools such as decision, social choice, and game theory to help them understand clearly why some explanations for political phenomena are stronger than others. The core material of Principles has been condensed by almost 40% into a briefer, more accessible format that not only resonates with students but also allows instructors to more easily cover all material in a single semester. Fourteen chapters have been updated and pared down to present only the most necessary information enhanced with plentiful visual features and connections to real-world examples.