Relevance of voting power

Democratic decision-making in groups requires institutions that aggregate t he preference of the choice participants into a collective choice under the restriction that no player is a dictator. Constitutions deliver alternativ e rules for democratic decision-making, the consequences of which are best analysed using cooperative game theory. The emergence of a power index lite rature in the 1980s reflects the relevance of this type of modelling of ins titutions for groups like the European Union, stating modalities of power f or the players.