Sincere Voting in Models of Legislative Elections

An assumption of sincere voting for one's most preferred candidate is frequently invoked in models of electoral competition in which the elected legislature consists of more than a single candidate or party. Voters, however, have preferences over policy outcomes--which are determined by the ex post elected legislature--and not over candidates per se. This observation provokes the following question. For what methods of translating election results into legislative policy outcomes is sincere voting rational in the legislative election? This paper provides the answer. One of the principal implications is that for sincerity to be rational, there necessarily exists a candidate for office whose electoral platform is the final legislative outcome, whether or not that candidate is elected to the legislature.