Elections are at the heart of our democracy. Understanding citizens’ decisions to vote or to abstain in elections is crucial, especially when turnout is declining. In this book, Andre Blais and Jean-Francois Daoust provide an original and elegant model that explains why people vote, based on four factors: political interest, sense of civic duty, perceived importance of the election, and ease of voting. Their findings are strongly supported by empirical evidence from elections in five countries. The analysis is compelling and demonstrates the power of their model to provide a provocative and parsimonious explanation of voter turnout in elections.