  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.
