PT

Partido de Trabajo/ Labor Party (PT)

Another of Mexico’s smaller parties, the left-wing PT was founded in 1990 and has generally allied itself with the PRD in elections, including in the last presidential election in 2006. Before this, in 2003, the PT ran its own candidates in the congressional races and captured six of the 500 seats in the Chamber of Deputies.

Their 2009 alliance with the PRD and the Convergencia party left them with higher number of 13 seats in the Chamber, as well as five senate seats.