The election of representatives of constituencies is based on proportional representation and the seats are distributed among the political parties in accordance with the following rules.
The total number of votes cast for each party within each separate constituency is divided by 1.4, 3, 5, 7 and so on until the number of votes cast is divided as many times as the number of seats that the party in question may be expected to obtain. The party which in accordance with the foregoing obtains the largest quotient is allotted the first seat, while the second seat is allotted to the party with the second largest quotient, and so on until all the seats are distributed.
List alliances are not permitted.
The seats at large are distributed among the parties taking part in such distribution on the basis of the relation between the total number of votes cast for the individual parties in the entire Realm in order to achieve the highest possible degree of proportionality among the parties. The total number of seats in the Storting to be held by each party is determined by applying the rules concerning the distribution of constituency seats correspondingly to the entire Realm and to the parties taking part in the distribution of the seats at large. The parties are then allotted so many seats at large that these, together with the constituency seats already allotted, correspond to the number of seats in the Storting to which the party in question is entitled in accordance with the foregoing. If a party has already through the distribution of constituency seats obtained a greater number of seats than it is entitled to in accordance with the foregoing, a new distribution of the seats at large shall be carried out exclusively among the other parties, in such a way that no account is taken of the number of votes cast for and constituency seats obtained by the said party.
No party may be allotted a seat at large unless it has received at least four per cent of the total number of votes cast in the entire Realm.
Specific provisions concerning the distribution among the constituencies of the seats at large allotted to the parties shall be determined by law.