English edit

Etymology edit

Attributed to Maurice Duverger, French sociologist who published on the subject in the 1950s and 1960s.

Proper noun edit

Duverger's law

  1. (political science) The principle that plurality-rule elections (such as first past the post) structured within single-member districts tend to favour a two-party system, and that the double-ballot majority system and proportional representation tend to favor multipartyism.
    • 2021 January 28, Michael Tomasky, “Why a Trump Third Party Would Be a Boon for Democrats”, in The New York Times[1], →ISSN:
      Out of that work emerged Duverger’s Law, which holds that single-member districts tend to produce two-party systems. [] And in the long run, the inexorable machinery of Duverger’s Law will ensure that the Patriot Party is folded back into the Republican Party.

Further reading edit