This paper introduces the Extraterritorial Rights and Restrictions dataset (EVRR), the first global time-series dataset of non-resident citizen voting policies and procedures. Although there have been previous efforts to document external voting, no existing data source simultaneously captures the scale (195 countries), time frame (71 years), and level of detail concerning extraterritorial voting rights and restrictions (over 20 variables). After a brief overview of prior datasets, we introduce EVRR coding criteria with a focus on conceptual clarity and transparency. Descriptive analysis of the dataset reveals both the steady expansion of extraterritorial voting as well as several regional and temporal trends of voting rights restrictions. Finally, we revisit and extend the work of two groundbreaking cross-national studies focused on the causes and effects of external voting rights. Using EVRR data we demonstrate that including more fine-grained aspects of extraterritorial voting provisions in these analyses improves understanding of important political and economic outcomes.

Elizabeth Iams Wellman, Nathan W. Allen, Benjamin Nyblade, The Extraterritorial Voting Rights and Restrictions Dataset (1950–2020), Comparative Political Studies, 2022.