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Predetermined Assembly Size and Equal Influence in MMP-Elections

Author

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  • Stensholt, Eivind

    (Dept. of Business and Management Science, Norwegian School of Economics)

Abstract

In MMP-elections (Mixed Member Proportional representation), a QP-ballot contains a first-vote for party Q’s candidate in a single-seat constituency and a second-vote for a list of candidates from party P in one common tally. In split ballots P≠Q. Traditional accounting (e.g. in Bundestag elections) does not record a ballot’s combination of first- and second-vote; collecting them in separate ballot boxes will not change the result. The assembly size is out of control (111 extra-ordinary list seats in 2017 (137 in 2021). Faithful accounting uses these combinations to obtain a predetermined size (the law’s Bundestag norm is 299 list seats), while still complying with MMP’s proportionality rule. The Federal Constitutional Court emphasizes the principle of all voters’ equal influence on the result. In 2017 and 2021 many split QP-ballots gave full support to two winners, but QQ-ballots only to one (Q=CSU). Faithful accounting removes this and some other inequalities in voters’ influence on the election outcome. The 2017 election achieved a unique transparency by giving top priority to (strict) proportionality. As the main example, it allows the following exposition of MMP with faithful accounting. A broader discussion in a wider setting, with references, is found in The Structure of MMP-elections.

Suggested Citation

  • Stensholt, Eivind, 2022. "Predetermined Assembly Size and Equal Influence in MMP-Elections," Discussion Papers 2022/11, Norwegian School of Economics, Department of Business and Management Science.
    • Handle: RePEc:hhs:nhhfms:2022_011
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    More about this item

    Keywords

    Mixed member proportional; equal influence; assembly size; split ballots; faithful accounting;
    All these keywords.

    JEL classification:

    • D72 - Microeconomics - - Analysis of Collective Decision-Making - - - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior

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