Duverger's law

Meaning

Proper Noun

• 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 multipartism."

Origin

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