They also redistributed land to eijidos and reduced illiteracy through the Each One
Currently led by Beatriz Paredes Rangel, among this partys accomplishments was the establishment of IMSS, a social security system, in 1943.  They also redistributed land to eijidos and reduced illiteracy through the Each One Teach One program after taking over from the PRM in 1940.    Its most recent president, Ernesto Zedillo, was the victim of bribery scandals and it came in third in the 2006 Presidential Election.  For ten points, name this Mexican political party, who won ten straight Presidential elections but has been out of power since 2000.
Currently led by Beatriz Paredes Rangel, among this partys accomplishments was the establishment of IMSS, a social security system, in 1943.  
Partido {Revolucionario Institucional} (accept Institutional {Revolutionary} Party)