The Cambridge Handbook of Political Psychology provides a comprehensive review of the psychology of political behaviour from an international perspective. Its coverage spans from foundational approaches to political psychology, including the evolutionary, personality and developmental roots of political attitudes, to contemporary challenges to governance, including populism, hate speech, conspiracy beliefs, inequality, climate change and cyberterrorism. Each chapter features cutting-edge research from internationally renowned scholars who offer their unique insights into how people think, feel and act in different political contexts. By taking a distinctively international approach, this handbook highlights the nuances of political behaviour across cultures and geographical regions, as well as the truisms of political psychology that transcend context. Academics, graduate students and practitioners alike, as well as those generally interested in politics and human behaviour, will benefit from this definitive overview of how people shape and are shaped by their political environment in a rapidly changing twenty-first century.