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Incentivising Participation in Liquid Democracy with Breadth-First Delegation

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  • Grammateia Kotsialou
  • Luke Riley

Abstract

Liquid democracy allows members of an electorate to either directly vote over alternatives, or delegate their voting rights to someone they trust. Most of the liquid democracy literature and implementations allow each voter to nominate only one delegate per election. However, if that delegate abstains, the voting rights assigned to her are left unused. To minimise the number of unused delegations, it has been suggested that each voter should declare a personal ranking over voters she trusts. In this paper, we show that even if personal rankings over voters are declared, the standard delegation method of liquid democracy remains problematic. More specifically, we show that when personal rankings over voters are declared, it could be undesirable to receive delegated voting rights, which is contrary to what liquid democracy fundamentally relies on. To solve this issue, we propose a new method to delegate voting rights in an election, called breadth-first delegation. Additionally, the proposed method prioritises assigning voting rights to individuals closely connected to the voters who delegate.

Suggested Citation

  • Grammateia Kotsialou & Luke Riley, 2018. "Incentivising Participation in Liquid Democracy with Breadth-First Delegation," Papers 1811.03710, arXiv.org, revised Feb 2019.
    • Handle: RePEc:arx:papers:1811.03710
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    References listed on IDEAS

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    1. Moulin, Herve, 1988. "Condorcet's principle implies the no show paradox," Journal of Economic Theory, Elsevier, vol. 45(1), pages 53-64, June.
    2. James Miller, 1969. "A program for direct and proxy voting in the legislative process," Public Choice, Springer, vol. 7(1), pages 107-113, September.
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