Dataset: Norwegian Election Study 2005


The Norwegian Election Study in 2005 is included in the Election Reserach Program at Institute of Social Research - ISF - (1957-2005). The objective of the study is partly to extend the analyses of earlier elections, partly to study the actual tendencies in Norwegian politics and characteristics of the election to the National Assembly - Stortinget - in 2005.

Bernt Aardal and Henry Valen have been responsible at IFS for the study. Statistics Norway completed in 2005 a data collection for the Norwegian Election study 2005: ISF has prepared the questionnaires, while SSB has drawn the sample, completed the collection of data and organised the data files.

For access to the dataset, use the NSD application form:

Variable Groups

Full Title

Norwegian Election Study 2005

Identification Number


Authoring Entity

Name Affiliation
Valen, Henry Institute for Social Research, Oslo
Aardal, Bernt Institute for Social Research, Oslo


Name Affiliation Abbreviation Role
Statistics Norway/Høstmark, Maria SSB Responsible for planning and carrying out of the survey
Statistics Norway/Lagerstrøm, Bengt Oscar SSB Advisor
Statistics Norway/Haslund, Jan SSB Programmeig of electronic questionnaire
Statistics Norway/Fodnesbergene SSB Preparation of sample and establishing of datafile
Statistics Norway/Livary, Hajar SSB Interview contact


Copyright (C) 2007 Statistics Norway

Funding Agency/Sponsor

Name Abbreviation Role Grant
Ministry of Local Government and Regional Development KRD Funding

Data Distributor

Name Affiliation Abbreviation
Norwegian Social Sciences Data Services NSD

Series Name

Norwegian Election Studies

Series Information

The Norwegian Election Research Programme was launched in the middle of the 1950's, under the direction of The Institute for Social Research. Henry Valen and Stein Rokkan were responsible for the programme. The programme co-operated with Norsk Gallup Institute A/S for sample survey data collection in the election studies covering the Storting elections in 1957, 1965, 1969 and 1973. Since 1977 the programme has co-operated with Statistics Norway (SSB) for the data collection for these studies. The election studies are intended to give statistical data for research covering elections and political processes in Norway. Since the start of the Norwegian Election Programme Professor Henry Valen has been the key administrator, but in 1985 Bernt Aardal took over as executive manager.


Date: 2008-09-15


Data from Statistics Norway are documented and prepared, second NSD edition.

Bibliographic Citation

"Norwegian Election Survey, 2005". Data collected from Statistics Norway, Oslo. Second NSD edition, Bergen 2008

List of Keywords

Topic Classification

Time Period Covered

Start End Cycle
2005 2005

Date of Collection

Start End Cycle
2005-09-13 2006-01-31


Norway  (NO)

Geographic Coverage


Geographic Unit


Unit of Analysis



The population entitled to vote under 80 years of age.

Kind of Data

survey data

Time Method

Cross-sectional survey

Data Collector

Statistics Norway  (SSB)

Sampling Procedure

The survey sample was divided in two groups. One group was a panel consisted of almost 1500 respondents that also had been interviewed in the Election Study of 2001. Due to the number of non-eligible respondents in this sample, it was supplemented by immigrants and younger persons. These respondents constituted thus a "false panel", in contrast to the rest of the respondents that had participated in 2001. The second group was cross sectional, around 1500 respondents were drawn randomly. These will contitute the panel for the election in 2009.  

The sample is a so-called rotating panel, meaning that half of the 2001 respondents were also interviewed in 1997, and that these respondents were also contacted in 2005.

The sample was drawn using Statistics Norway's standard sampling frame for face-to face interviews, which uses random sampling in two stages. The standard sampling frame firstly divides the country into a number of primary sampling areas, which in turn are divided into 109 subpopulations, called strata. The criteria for stratification of primary sampling areas are economic classification, population density and centrality. The aim is to create strata, which are as homogenous as possible, but still geographically concentrated. The primary sampling units are municipalities or aggregates of municipalities. Municipalities with few inhabitants are grouped together with other municipalities to ensure that each sampling area consists of at least 7 per cent of the total number of inhabitants in the stratum the municipality belongs to. All municipalities with more than 30 000 inhabitants and some with 25 000 to 30 000 inhabitants constitute separate strata. The other sampling areas are stratified, within each county, by industrial structure, population density, centrality, patterns of commute and trade, media coverage and communications.  

Gross sample: 2965
Net sample: 2012
Response rate: 68 %

Mode of Data Collection

Face-to-face interview/telephone interview


No weighting necessary


Availability Status

Data from "Norwegian Election Study 2005" are made available for research purposes given a written application.

Extent of Collection

One data file; different formats can be made.


Data from "Norwegian Election Study 2005" are made available for research purposes given a written application.

Citation Requirement

Users are obliged to refer to producer and distributor of the data by writing the following in forewords or footnotes in eventual publications:
“(Some of) the data applied in the analysis in this publication are based on "Norwegian Election Study, 2005". Data are anonymized and made available through Norwegian Social Data Services (NSD). Prof. Bernt Aardal and the Institute of Social Reserach were responsible for the original study and Statistics Norway collected the data. Neither Bernt Aardal, ISF, SSB nor NSD are responsible for the analyses/interpretation of the data presented here."

Deposit Requirement

Access to data is given on the condition that NSD gets three copies, alternatively a PDF-file, of eventual reports that are written on the basis of the data. This to ensure best possible information of the use of data we distribute. A copy of all reports will be sent to Statistics Norway.


Application for access to the data has to include name, institutional affiliation, project title, information about sources of financing, postal address. A declaration of secrecy has to be signed before delivery of data.


Neither the Bernt Aardal, ISF, SSB nor SSB are responsible for the analyses/interpretation of the data presented here.

Related Studies

Norwegian Election Study, 2001

Norwegian Election Study, 1997

Norwegian Election Study, 1993

Norwegian Election Study, 1989

Norwegian Election Study, 1985

Norwegian Election Study, 1981

Norwegian Election Study, 1977

Norwegian Election Study, 1973

Norwegian Election Study, 1969

Norwegian Election Study, 1965

Norwegian Election Study, 1957

Related Publications

Valgundersøkelsen 2005, Dokumentasjons- og tabellrapport

Aardal, Bernt; Høstmark, Maria; Lagerstrøm, Bengt Oscar; Stavn, Guro. (2007) Valgundersøkelsen 2005, Dokumentasjon og tabellrapport, Rapport 2007/31, Statistisk sentralbyrå


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