Proportional Representation, the Single Transferable Vote, and Electoral Pragmatism

Abstract

An exploration of competing electoral systems—single-member district plurality systems (predominant in the U.S.) versus proportional representation systems (STV in particular)—and competing theories of participatory democracy: J.S. Mill’s optimistic deliberative democracy model, and Richard Posner’s more pessimistic elite democracy model. Mill assumes voters are politically educable, capable of making informed contributions to legislative processes through electoral action. Posner assumes voters are too narrowly self-interested to be substantively educable. Elections, consequently, serve merely as a crude form of quality control and smooth succession of political authority. It is argued that the latter theory is plausible only under single-member district plurality electoral systems like ours, so that the electoral system grounds the theory, not the other way around. Under a single transferable vote system (Mill’s preferred system), in which voters’ ordinal preferences among candidates govern the outcomes in multi-member districts, Mill’s deliberative democracy model has a realistic prospect of success.