Eva Rios is a Visiting Scholar at CIPR and a Research Manager at Gradient Metrics. She received her PhD in Political Science from Brown University in 2025, specializing in comparative politics. Her research examines religion and politics in Latin America, with a particular focus on how Evangelicalism shapes political behavior, public opinion, and public policy in Brazil. She specializes in survey research and causal inference, with expertise in survey design and experimentation, including the use of list experiments to measure sensitive attitudes.