Published on Wed Oct 14 2020

Power in Liquid Democracy

Yuzhe Zhang, Davide Grossi

The paper develops a theory of power for delegable proxy voting systems. We define a power index able to measure the influence of both voters and delegates.

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Abstract

The paper develops a theory of power for delegable proxy voting systems. We define a power index able to measure the influence of both voters and delegators. Using this index, which we characterize axiomatically, we extend an earlier game-theoretic model by incorporating power-seeking behavior by agents. We analytically study the existence of pure strategy Nash equilibria in such a model. Finally, by means of simulations, we study the effect of relevant parameters on the emergence of power inequalities in the model.