Information

public opinion survey (global, 1948-2020)

https://wpid.world/

user dataset (user) — individual user datasets

first imported on 11 March 2026 and last updated on 15 March 2026

Reference

+ Gethin, A., Martínez-Toledano, C., & Piketty, T. (Eds.). (2021). Political cleavages and social inequalities: A study of fifty democracies, 1948-2020. Harvard University Press.
+ WPID - World Political Cleavages and Inequality Database. (n.d.). Retrieved March 11, 2026, from https://wpid.world/

Import "readme.txt"

Source

• Gethin, A., Martínez-Toledano, C., & Piketty, T. (Eds.). (2021). Political cleavages and social inequalities: A study of fifty democracies, 1948-2020. Harvard University Press.
• WPID - World Political Cleavages and Inequality Database. (n.d.). Retrieved March 11, 2026, from https://wpid.world/

Import

• Parties with size >= 1 are included
• Excluded are following entries from vote:
• "None"
• "No vote"
• "Blank",
• "Other"
• "Other right"
• "Other left"
• "Other center"
• "Sonstige"
• "Nichtwaehler"
• "Unabhaengige"
• "Andere"
• ""
• "."

Variables

• countrycode -- ISO 3166-1 alpha-3
• name_short -- party abbreviation based on vote and correspondence file (see wpidmicro.R)
• name_english -- party name english based on vote and correspondence file (see wpidmicro.R)
• name -- party name based on vote (see wpidmicro.R)
• year_first -- first dataset appearance of party
• year_last -- last dataset appearance of party
• size -- share of respondents choosing the party per year and country
• size_year -- year the party got size
• party_id -- iso-vote (see wpidmicro.R)
• iso -- country variable in gmp.dta
• vote -- party variable in gmp.dta