The purpose of this is to bring about a more equitable political distribution of seats than it is possible to achieve through a distribution based purely on electoral divisions. (regjeringen.no)
They apply their predicted national changes in the share of the vote to county electoral division and ward level results (adjusting for boundary changes). (electionsetc.com)
A party can win outright by being only marginally ahead of its competitors in most electoral divisions. (newscientist.com)