Non-resident citizen voting is citizens voting in elections according to their citizenship while not residing in the country of the election. As of 2020 a total of 141 countries grant non-residents such as emigrants or expatriates the right to non-resident citizen voting.[1] There is considerable variation across countries in regard to voter eligibility, voting modalities, i.e. voting in person at diplomatic missions or other physical locations, by post or online, which elections nonresident citizens may vote in, i.e. elections of the national legislature, executive elections, referendums, or sub-national elections, and how nonresident citizen voters are represented. The number of countries enfranchising nonresident citizens accelerated significantly in the 1990s. Social scientists have advanced a number of claims about the causes and consequences of this development and debated its normative implications or pros and cons of nonresident citizen voting.