Replication Data for: A global panel dataset of dyadic dual citizenship acceptance

Dual citizenship provides access to secure legal status and rights in more than one country for an unprecedented number of migrants and their descendants around the world. While this requires the matching of legal regulations between two states, existing studies of dual citizenship typically focus on either migrant origin or destination perspectives. To explore the dyadic nature of this phenomenon we introduce the GLOBALCIT Dyadic Dual Citizenship Acceptance Dataset, covering over 1.8 million directed dyad-year observations measuring the legal rules in place in up to 201 states back to 1960. We identify regulatory trends and present estimates of the number and proportion of global migrants affected by changing policy constellations, as well as variation in acceptance across political regimes. We show that migrants are more likely to acquire destination country citizenship, and thus achieve democratic representation, in constellations where they can maintain a legal link with their origin country.

双重国籍（Dual citizenship）为全球范围内数量空前的移民及其后裔提供了在多国获取可靠法律身份与相应权利的渠道。尽管双重国籍的落地需要两国法律规制相互适配，但现有相关研究通常仅聚焦于移民来源国或目的地国的单一视角。为探究这一现象的双边属性，我们构建了GLOBALCIT双边双重国籍接纳数据集。该数据集涵盖自1960年起、覆盖最多201个国家的超180万条定向双边年度观测数据，用于衡量各国现行有效的法律规制条款。本研究梳理了相关规制的演变趋势，估算了受政策格局变化影响的全球移民规模与占比，并分析了不同政治体制下双重国籍接纳程度的差异。研究结果表明，当移民能够与母国维持法律联系时，他们更易获得目的地国国籍，进而获得民主代表权。