Last week, the Election Authority sent out letters to people in that position, alerting them to the fact that they have to decide and let the authorities know their choice before April 26, one month ahead of the election.
Radio Sweden spoke to French-American Spencer Walle in Malmö, and Uppsala-resident Attila Szilva from Hungary, about where they have decided to vote and why.
Oscar Hammar at the Swedish Election Authority explained that there are mechanisms in place to stop anyone from voting in two countries in the election in May. He also explained what applies to British nationals in terms of voting in the European Parliament elections this year.
To listen to the interviews, click on the link above.