Disagreement Index


Based on the Norwegian MPs voting records, NSD has constructed an index that expresses political differences and changing coalitions in the parliament (Storting). The index takes into account each representative’s voting behaviour. In each voting, the representatives are voting “Yes” or “No”. If every representative from Party A vote “Yes”, and every representative from Party B vote “No”, there is a 100 percent disagreement between the two parties. Likewise, if every representative from both parties votes “Yes”, there is a 0 percent disagreement between the two parties. Based on the above, it is possible to measure the political distance between the parties in the Storting. The index expresses the mean distance between the number of “Yes”-votes for Party A and B, and varies between 0 (no disagreement) and 100 (maximum disagreement).

The disagreement index includes data going back to 1979. See Archive of Voting Records for more information about the data.


The statistical tool Nesstar enables you to customize tables, diagrams and figures. Follow this step-wise procedure:

  1. Choose the category you are interested in studying. You have three options: ‘Alle saker’, ‘Emne’, and ‘Stortingskomité’.
  2. The menu enables you to choose between different ‘Partier’, ‘Emner/stortingskomiteer’ og ‘Tidsperiode’.
  3. Diagrams and figures are available by clicking on the icons in the top-right corner.

Terms of use

(Some of) the data applied in the analyses in this publication are based on Norwegian Social Science Data Services' (NSD's) Archive of Voting Records. The data are provided by the Department of History, University of Oslo, and prepared and made available by NSD. Neither the Department of History, University of Oslo, nor NSD are responsible for the analyses/interpretation of data presented here.


If you have any enquiries or questions, or detect any errors, please send an email to polsys@nsd.uib.no.


Source: NSD´s Archive of Voting Records | Condition for Use of Data | Access to Data