In 1982, Ibarra became the first woman to run for the presidency of Mexico, on the ticket of the
Trotskyist Workers Revolutionary Party (PRT). She ran for president a second time, again with the PRT, in the
1988 Mexican general election.
Chamber of Deputies Ibarra de Piedra served two terms as federal deputy, with the PRT in 1985 and with the
Party of the Democratic Revolution (PRD) in 1994. In both terms, she arrived to Congress via the method of
proportional representation (plurinominal).
Senate In March 2006 the PRD designated Ibarra as their candidate to the
Senate, also via proportional representation, to serve during the
LX (2006-2009) and
LXI Legislatures (2009-2012); as a result of that designation she was able to secure a seat in the Senate representing the
PRD, but in October 2006 she left the PRD faction in the Senate to join the
Labor Party (PT) faction as part of a political negotiation between the PRD and the PT. ==Belisario Domínguez Medal of Honor==