A tool exists to compute the influence exerted by individual actors within a voting body. It quantifies the probability of a particular actor’s vote being critical to the outcome of a decision. For instance, in a council where decisions require a supermajority, this calculation reveals which members hold disproportionate sway due to their position in securing the required threshold.
This mathematical approach provides valuable insights into the distribution of influence and the fairness of voting systems. It moves beyond simple vote counting to assess real power. Its development stems from game theory and provides a framework for understanding coalition formation and strategic decision-making in various settings, from political assemblies to corporate boards.
