Sebastián Umpierrez de Reguero is a Research Associate in the Global Citizenship Observatory (GLOBALCIT) at the European University Institute (Italy). He is a dual-PhD Candidate in Political Science at Universidad Diego Portales (Chile) and in Humanities at Leiden Universiteit (Netherlands). Currently, Sebastián is a member of CORE Latam project on Constitutional Reasoning in Latin America. His research areas include party politics, transnational populism and electoral studies, particularly migrant electoral rights and non-resident citizens’ voter turnout. Sebastián has recently published in Representation, Frontiers in Political Science, Oxford Research Encyclopedia of Politics, Latin American Politics and Society, among other regional and international journals.