(Successful) Democracies Breed Their Own Support∗ Daron Acemoglu† Nicol´asAjzenman‡ Cevat Giray Aksoy§ Martin Fiszbein¶ Carlos Molina‖ August 11, 2021 Abstract Using large-scale survey data covering more than 110 countries and exploiting within- country variation across cohorts and surveys, we show that individuals with longer expo- sure to democracy display stronger support for democratic institutions. We bolster these baseline findings using an instrumental-variables strategy exploiting regional democrati- zation waves and focusing on immigrants' exposure to democracy before migration. In all cases, the timing and nature of the effects are consistent with a causal interpretation. We also establish that democracies breed their own support only when they are successful: all of the effects we estimate work through exposure to democracies that are successful in providing economic growth, peace and political stability, and public goods. Keywords: democracy, economic growth, institutions, support for democracy, values. JEL Classification: P16. ∗Acemoglu and Molina gratefully acknowledge financial support from the Bradley Foundation. †Massachusetts Institute of Technology, Department of Economics. E-mail:
[email protected] ‡S~aoPaulo School of Economics-FGV. E-mail:
[email protected] §European Bank for Reconstruction and Development & King's College London. E-mail:
[email protected] ¶Boston University, Department of Economics. E-mail:
[email protected] ‖Massachusetts Institute of Technology, Department of Economics. E-mail:
[email protected] 1 Introduction \Our nation stands for democracy and proper drains." John Betjeman (Poet Laureate of the UK, 1972-1984). With many voters expressing increasing dissatisfaction with the democratic system,1 misin- formation and extremism spreading rapidly (e.g., Sunstein, 2018; Marantz, 2020), and authoritarian- leaning populist parties on the rise in many Western countries (e.g.