For the purpose of parliamentary elections the country has been divided into 15 electoral districts in accordance with the division into provinces. A number of representatives proportional to the number of Finnish citizens residing in the district six months prior to the elections is elected from each district. However, from the electoral district of Åland is always elected one representative.
Well before the elections, the Government decides on the division of parliamentary seats on the electoral districts on the basis of information in the Population Information System.
Electoral districts
Electoral District of Helsinki
Electoral District of Uusimaa
Electoral District of Varsinais-Suomi
Electoral District of Satakunta
Electoral District of Häme
Electoral District of Pirkanmaa
Electoral District of Kymi
Electoral District of South Savo
Electoral District of North Savo
Electoral District of North Karelia
Electoral District of Vaasa
Electoral District of Central Finland
Electoral District of Oulu
Electoral District of Lapland
Electoral District of Åland