Explaining Support for Populism in Contemporary Latin America investigates the stronghold that populism exerts on citizens in the developing world. More specifically, relying on regional surveys this book explores why many citizens consistently supported eight populist presidents who were elected in contemporary Latin America. It examines the determinants of support for the populist presidents who governed Venezuela, Ecuador, Bolivia, and Nicaragua between 1999 through 2019, and the variables that explain support for the most recent populist presidents in Mexico, Brazil, and El Salvador between 2018 and 2023. Unique to this approach is a strong emphasis on the demand-side of populism and the use of country-specific survey data across the years. This book explores the determinants of support for populist presidents in four dimensions: demographic variables, ideological and policy-preference variables, performance variables, and variables related to representative democracy. Understanding what drives people to support populist leaders is critical for revitalizing representative democracy in Latin America. Furthermore, insights about the factors that lead citizens to support populism in Latin America can also inform the analysis of support for populism in other parts of the world.