National apportionment of MP seats in the Riksdag National apportionment of MP seats in the Riksdag 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
Riksdag a new Prime Minister and that the Prime Minister has chosen his cabinet ministers. The Riksdag can cast a vote of no confidence against any single cabinet minister (), thus forcing a resignation. To succeed a vote of no confidence must be supported by an absolute majority (175 members) or it has failed. If a vote of no confidence is cast against the Prime Minister this means the entire government is rejected. A losing government has one week to call for a general election or else the procedure of nominating a new Prime Minister starts anew. Political parties are strong