Editing Two-party system (section)

=== Brazil ===
{{Main|Political parties in Brazil}}
During the [[Empire of Brazil|imperial period]], since 1840, two great parties with a national base alternated its dominance between legislatures: the [[Liberal Party (Brazil, 1831)|Liberal]] and the [[Conservative Party (Brazil)|Conservative]]. These parties were dissolved in 1889, after the republic was instituted in Brazil, in which the registration of party directories came under the jurisdiction of the states.

[[Brazil]] also had a two-party system for most of [[Brazilian military government|its military dictatorship]] (1964–1985): on October 27, 1965, the Institutional Act 2 decree<ref>{{cite web |title=AIT-02-65 |url=http://www.planalto.gov.br/ccivil_03/ait/ait-02-65.htm |website=www.planalto.gov.br}}</ref> banned all existing parties and conditioned the creation of new parties to the quorum of 1/3 of the then-elected National Congress; resulting in the creation of two parties: a pro-government party, the [[National Renewal Alliance]] (ARENA) and an opposition party, the [[Brazilian Democratic Movement]] (MDB). Despite officially having a bipartisan system, complex electoral mechanisms, nominally neutral, were created to guarantee the prevalence of the ARENA in the [[National Congress of Brazil|National Congress]], making Brazil, in practice, a [[dominant-party system]] in that period. The two parties were dissolved in 1979, when the regime allowed other parties to form.<ref>{{cite web |url=https://www.britannica.com/place/Brazil/Political-parties |title=Brazil – Political parties |last1=Martins |first1=Luciano |last2=Schneider |first2=Ronald Milton |author-link2=Ronald Schneider (historian) |website=[[britannica.com]] |access-date=23 September 2017 |archive-date=24 September 2017 |archive-url=https://web.archive.org/web/20170924002247/https://www.britannica.com/place/Brazil/Political-parties |url-status=live }}</ref>