The electoral system in Sweden is proportional. Of the 349 seats in the national diet, the unicameral Riksdag, 310 are fixed constituency seats () allocated to constituencies in relation to the number of people entitled to vote in each constituency (). The remaining 39 leveling seats () are used to correct the deviations from proportional national distribution that may arise when allocating the fixed constituency seats. There is a constraint in the system that means that only a party that has received at least four per cent of the votes in the whole country participates in the distribution of seats. However, a party that has received at least twelve per cent of the votes in a constituency participates in the distribution of the fixed constituency seats in that constituency.See e.g.: SOU 2008:125 En reformerad grundlag (Constitutional Reform), Prime Ministers Office.For the general election of 2010, See e.g.: Länet tappar ett mandat, Örnsköldsviks Allehanda, March 20, 2009.
Apportionment of fixed constituency seats
Constituency 1970 1973 1976 1979 1982 1985 1988 1991 1994 1998 2002 2006 2010 2014 2018 2022Stockholm Municipality 31 29 27 26 26 25 25 25 25 26 27 27 28 29 29 29 Stockholm County 24 27 28 29 30 31 32 32 33 34 35 36 37 38 39 40Uppsala CountyBy the election in 2006, Heby Municipality was transferred from Västmanland County to Uppsala County.8 8 9 9 999 9 10 10 10 11 11 11 11 12Södermanland County 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9Östergötland County 15 15 15 15 15 15 15 15 15 15 15 14 14 14 14 14Jönköping County 12 11 11 11 11 11 11 11 11 12 11 11 11 11 11 11Kronoberg County 6 6 6 6 7 6 6 6 6 6 6 6 6 6 6 6Kalmar County 10 9 9 9 9 9 9 9 9 9 8 8 8 8 8 8Gotland County 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2Blekinge County 6 6 6 6 6 6 6 6 6 6 5 5 5 5 5 5Kristianstad CountyKristianstads County was abolished by the election of 1998. The constituency is now referred to as Skåne County Northern and Eastern.10 10 10 11 11 11 11 11 11 - - - - - - -FyrstadskretsenFyrstadskretsen and Malmöhus County were adjusted by the election of 1994.18 18 18 17 17 17 17 17 - - - - - - - -Malmöhus County 10 10 10 11 11 11 11 11 - - - - - - - -Malmöhus County North - - - - - - - - 9 - - - - - - -Malmöhus County South - - - - - - - - 11 - - - - - - -Malmö Municipality - - - - - - - - 8 9 9 9 9 10 10 10Skåne County Western - - - - - - - - - 9 9 9 9 9 9 9Skåne County Southern - - - - - - - - - 11 11 11 12 12 12 12Skåne County Northern and Eastern - - - - - - - - - 10 10 10 10 10 10 10Halland County 7 8 8 9 9 9 9 9 9 10 10 10 10 10 10 10Gothenburg Municipality 17 17 17 17 16 16 16 16 15 16 17 17 17 17 17 17Bohus CountyVästra Götaland County was created by the election of 1998. At the same time, Habo and Mullsjö municipalities were transferred to Jönköping County.10 10 10 10 10 11 11 11 11 - - - - - - -Älvsborg County North 9 9 9 9 9 9 9 9 9 - - - - - - -Älvsborg County South 7 7 7 7 7 7 6 7 6 - - - - - - -Skaraborg County 10 10 10 10 10 10 10 10 10 - - - - - - -Västra Götaland County WestThe borders of electoral districts within the Västra Götaland County underwent minor modifications in 2018. See: Fördelning av fasta valkretsmandat 2018, Valmyndigheten. - - - - - - - - - 11 11 11 12 12 11 11Västra Götaland County North - - - - - - - - - 9 9 9 9 9 8 8Västra Götaland County South- - - - - - - - - 6 6 6 6 6 7 7Västra Götaland County East - - - - - - - - - 9 9 9 9 9 9 8Värmland County 11 11 11 11 11 11 11 10 10 10 10 10 9 9 9 9Örebro County 11 11 11 11 10 10 10 10 10 10 10 10 9 9 9 9Västmanland County 9 9 9 9 9 9 9 9 9 9 9 8 8 8 8 8Dalarna CountyThe constituency was named Kopparberg County before the election of 1998. 11 11 11 11 11 11 11 11 11 10 10 10 10 9 9 9Gävleborg County 12 12 12 11 11 11 11 11 11 10 10 10 10 9 9 9Västernorrland County 11 11 11 10 10 10 10 10 10 9 9 9 8 8 8 8Jämtland County 5 5 5 5 5 5 5 5 5 5 5 5 4 4 4 4Västerbotten County 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 8Norrbotten County 10 10 10 10 10 10 10 10 10 9 9 9 9 8 8 8Total fixed constituency seats 310 310 310 310 310 310 310 310 310 310 310 310 310 310 310 310
Notes