Entry-deterring policy differentiation by electoral candidates

This paper studies the equilibria of a one-dimensional spatial model in whi ch three candidates seek to maximize their probabilities of winning, are un certain about the voters' preferences, and may move whenever they wish. In the presence of enough uncertainty there is an equilibrium in which two can didates enter simultaneously at distinct positions in the first period and either the third candidate does nor enter or enters between the first two i n the second period. (C) 2000 Elsevier Science B.V. All rights reserved.