Workers' Cause Party

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Workers' Cause Party (Portuguese: Partido da Causa Operária, PCO) is a political party in Brazil. Its origins can be traced back to 1978. On that year, several Trotskyist militants who were not satisfied with the socialist international[clarification needed] united under the name Tendência Trotskista do Brasil (Brazilian Trotskyist Tendency, TTB). However, it was only established in 1995.


In 1980, this organization united itself with the newly formed Worker's Party (PT), becoming very involved in that decade's municipal and state elections, with several mayors and state representatives elected.

In 1990 and 1991, however, several TTB members were expelled from the PT due to their non-commitment to the Party's statutes. After that, the PCO was officially organized and founded in 1995.[2]

Currently, the PCO maintains the same Trotskyist policies of its foundation.

Youth wing

The youth wing of the party is the Revolutionary Youth Alliance (AJR).

Electoral results

Presidential elections

Year Candidate Votes  %
2002 Rui Costa 38,619 0.04%
2006 Rui Costa 0 0%
2010 Rui Costa 12,206 0.01%
2014 Rui Costa 12,324 0.01%


  1. ^
  2. ^ (in Portuguese) Historical note about the PCO

External links

Media related to Partido da Causa Operária at Wikimedia Commons

  • (in Portuguese) Partido da Causa Operária official website
Preceded by
28 - BLRP (PRTB)
Numbers of Brazilian Official Political Parties
29 - WCP (PCO)
Succeeded by
30 - NEW (NOVO)

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