Country polling guide

Iceland polling guide

Context for Icelandic party polling, constituency and adjustment seats, the five-per-cent rule, local balance and the historical archive endpoint.

Last reviewed 14 Aug 2026

Open Iceland tracker

Overview

This tracker records the published nationwide party-support series available for Iceland's 2021 parliamentary cycle. It remains a historical archive until a complete comparable source for a later cycle is reviewed, rather than presenting old observations as current polling.

Electoral system context

Members of the Althing are elected from multi-member constituencies with adjustment seats used to improve national proportionality. Parties need national support for adjustment-seat eligibility, while constituency results and candidate votes also affect representation.

Party and bloc rationale

The reviewed local balance groups Left-Green, Social Democratic and Socialist entries against Independence, Centre, Progressive, People's and Reform parties. Pirates and others remain outside. This is a time-bounded Bismuth aid for navigation, not an official coalition or universal ideology score.

Polling limitations

The current published snapshot ends in 2021 and must not be described as a live measure of later opinion. Iceland's small electorate and party field can make sampling movement pronounced, while national values do not reproduce constituency allocation, candidate votes or eventual coalition negotiations.

Sources