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Double Proportionality for the European Parliament: The Tandem System

In: Advances in Collective Decision Making

Author

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  • Jo Leinen

    (European Parliament)

  • Friedrich Pukelsheim

    (University of Augsburg)

Abstract

The tandem system proposes a double proportional electoral system for the European Parliament. It offers a forum for europarties to contest an election with power, visibility and influence. The tandem system proceeds in three steps. The first step apportions all parliamentary seats among europarties by aggregating the electorate’s votes at Union level. Thus, with regard to the division of the Union’s citizens by political persuasion, the tandem system obeys the One Person–One Vote principle. The second step, disaggregation of the unionwide apportionment, allots the seats by Member State and Europarty in a way safeguarding the seat contingents of the Member States. Thus, with regard to the Union’s layout by Member State, the tandem system respects the principle of degressive representation. The third step assigns the seats of a party in a Member State to domestic candidates by means of the same provisions that Member States have been employing in the past, thus complying with the Union’s principle of subsidiarity.

Suggested Citation

  • Jo Leinen & Friedrich Pukelsheim, 2023. "Double Proportionality for the European Parliament: The Tandem System," Studies in Choice and Welfare, in: Sascha Kurz & Nicola Maaser & Alexander Mayer (ed.), Advances in Collective Decision Making, pages 289-300, Springer.
    • Handle: RePEc:spr:stcchp:978-3-031-21696-1_17
    DOI: 10.1007/978-3-031-21696-1_17
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