Editing Maurice Duverger (section)

==Duverger's law==
{{Main|Duverger's law}}
With discovery attributed to Duverger, he observed the effect and recorded it in several papers published in the 1950s and 1960s. In the course of further research, other political scientists began calling the effect a "law" or principle. Duverger's law suggests a nexus or synthesis between a party system and an electoral system: a proportional representation (PR) system creates the electoral conditions necessary to foster party development while a plurality system marginalizes many smaller political parties, resulting in what is known as a two-party system.

In political science, Duverger's law is a principle which asserts that plurality rule elections structured within single-member districts tends to favor a two-party system. This is one of two hypotheses proposed by Duverger, the second stating that "the double ballot majority system and proportional representation tend to multipartism."<ref>{{cite book
| last = Sartori
| first = Giovanni
| author-link = Giovanni Sartori
| title = Comparative Constitutional Engineering: An Inquiry into Structures, Incentives and Outcomes
| year = 1994
| publisher = Macmillan}}</ref>