We develop a model of electoral competition in which citizens choose whether or not to run as candidates; a winner implements her favorite policy. The equilibrium number of candidates depends negatively on the cost of run ning and positively on the benets of winning. For some parameter values...

We study a collective decision-making process in which people interested in an issue may participate, at a cost, in a meeting, and the resulting decision is a compromise among the participants' preferences. We show that the equilibrium number of participants is small and their positions are...

The basic theory of strategic and extensive games is described. Strategic game, Bayesian games, extensive games with perfect information, and extensive games with imperfect information are defined and explained. Among the solution concepts discussed are Nash equilibrium, correlated equilibrium,...

We study interactive situations in which players are boundedly ra- tional. Each player, rather than optimizing given a belief about the other players' behavior. as in the theory of Nash equilibrium, uses the following choice procedure. She first associates one consequence with each of her...

We study the implications of economies of party size in a model of party formation. We show that when the policy space is one-dimensional, candidates form at most two parties. This result does not depend on the magnitude of the economies of party size or sensitively on the nature of the...