Key points are not available for this paper at this time.
Dual citizenship provides access to secure legal status and rights in more than one countryfor an unprecedented number of migrants and their descendants worldwide. While this doubleallegiance requires matching legal regulations between two states, existing studies of dual citizenshiptypically focus on migrant origin or destination perspectives. To explore this phenomenon’sdyadic nature, we introduce a procedure that leverages existing monadic data on two distincttypes of dual citizenship restrictions: origin country restrictions on the loss of citizenship bycitizens naturalizing abroad and destination country restrictions requiring foreigners acquiringcitizenship in a country to renounce any other citizenship. We add novel data on dyad-specificregulations in place in nearly 13 thousand country-country-year combinations. This results ina global panel dataset of the regulation of dual citizenship in 1.8 million directed dyad-yearobservations in place between 201 states back to 1960. An open access replication script allowsreproducing and updating the dyadic dataset with new available data. We identify regulatorytrends and present estimates of the number and proportion of global migrants affected bychanging policy constellations and variation in acceptance across political regimes. We show thatmigrants are more likely to acquire destination country citizenship and thus achieve democraticrepresentation in constellations where they can maintain a legal link with their origin country.
Vink et al. (Tue,) studied this question.