Data Archive

Public Datasets

Here you may find:

• Country-specific datasets for each election year and questionnaires, including both original and standardized variables
• Merged datasets by country with their respective election waves
• Merged dataset with each country and pooling standardized CNEP variables, including affective and ideological polarization indexes.
• Full documentation of all the data according to international academic standards
• The questionnaires of the surveys in English (including additional variables that are not in the core questionnaire)
• New: Now you may use panel data for the first time in CNEP's history - for the case of Italy 2018 and Spain 2023. More cases with panel data will be released back in September.

This year the CNEP team has made relevant updates in our archive by incorporating:

• Indonesia 2024
• US 2024
• Germany 2025
• Portugal 2025
• the Netherlands 2025
• the restored version of Japan 1993 and Germany 1990
• New: Chile 2025

To get access to retained datasets or non-released versions of the Merge, please contact us at [email protected]