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  • The Comparative Study of Electoral Systems (2015): CSES Module 3 Full Release. GESIS Data Archive, Cologne. ZA5181 Data file Version 5.0.0, doi:10.7804/cses.module3.2015-12-15 (en)
  • The Comparative Study of Electoral Systems (2015): CSES Module 3 Full Release. GESIS Datenarchiv, Köln. ZA5181 Datenfile Version 5.0.0, doi:10.7804/cses.module3.2015-12-15 (de)
?:comment
  • Election Study Notes on Module 3 (ZA5181) (en)



  • FOR COUNTRY SPECIFIC INFORMATION

    see Election Study Notes (en)
  • Effective number of parliamentary parties (ENPP).

    Formula: ENPP = 1/(SUM[S_i^2])
    where S_i represents the seat share of party i, and all parties (i=1,2...n) receiving votes are included in the calculation.
    Definition based on Laakso, M.and R. Taagepera (1979). '"Effective" Number of Parties: A Measure with Application to West Europe', Comparative Political Studies 12: 3-27.
    (en)
  • NOTES: C5095
    The electoral data employed to calculate this index comes from lower house elections, unless the study is focused on upper house election exclusively.

    Source of electoral data: Multiple.
    (en)
  • NOTES: C5095
    The electoral data employed to calculate this index comes from lower house elections, unless the study is focused on upper house election exclusively.

    Source of electoral data: Multiple.
    (de)
?:dateCreated
  • 2015 (xsd:gyear)
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  • 2005-01-01 (xsd:date)
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  • 2005 (xsd:gyear)
?:groupDescription
  • CSES is a collaborative program of research among election study teams from around the world. The research program as well as the questionnaire and the study design are developed by an international committee of leading social researchers. Participating countries include a common module of survey questions in their post-election studies. The data contain information on individual choice behavior, demographics, the constituencies, the national election results and the political systems. The studies are then merged into a single, free, public dataset for use in comparative study and cross-level analysis. (en)
  • Die CSES ist eine weltweite Kooperation von Wahlforschern. Das Forschungsprogramm, der Fragebogen und das Studiendesign werden durch ein internationales Planungskomitee führender Sozialforscher erstellt. Teilnehmende Länder implementieren einen einheitlichen Fragenkomplex in ihre Nachwahlstudien. Die erhoben Daten umfassen das individuelle Wahlverhalten, politische Einstellungen und sozio-demographische Merkmale sowie Angaben zu den Wahlbezirken, den nationalen Wahlergebnissen und dem nationalen politischen System. Die einzelnen Länderstudien werden in einen gemeinsamen Datensatz integriert und stehen der Wissenschaft für vergleichende und länderübergreifende Untersuchungen frei zur Verfügung. (de)
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  • Englisch (de)
  • English (en)
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  • CA (xsd:string)
  • CH (xsd:string)
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  • LV (xsd:string)
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  • PE (xsd:string)
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  • C5095 (xsd:string)
  • C5095 - (de)
  • C5095 - EFFECTIVE NUMBER OF PARLIAMENTARY PARTIES (en)
  • EFFECTIVE NUMBER OF PARLIAMENTARY PARTIES (en)
  • EFFECTIVE NUMBER OF PARLIAMENTARY PARTIES (de)
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  • GESIS-ExploreData (xsd:string)
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?:startDate
  • 2005 (xsd:gyear)
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  • Comparative Study of Electoral Systems (CSES) (de)
  • Comparative Study of Electoral Systems (CSES) (en)
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  • EFFECTIVE NUMBER OF PARLIAMENTARY PARTIES (en)
  • EFFECTIVE NUMBER OF PARLIAMENTARY PARTIES (de)
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  • C5095 (xsd:string)