The History of Mexico's Ruling Party
Updated 14:42, 30-Jun-2018
Franc Contreras
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The world's largest Spanish-speaking nation is undergoing one of the most closely watched presidential elections in modern history. The front-runner is a left-leaning populist and a former mayor of Mexico City, Andres Manuel Lopez Obrador, better known as AMLO. 
He has been a long-standing critic of the Institutional Revolutionary Party or PRI, which has held power in Mexico for more than 75 years and currently controls the presidency and a majority in both houses of the Mexican Congress. 
But like most Mexican politicians, Lopez Obrador was also once a member of the PRI, and his case illustrates the PRI's deep connection to political power in Mexico. Experts say to understand Mexico's power structure, it is essential to know the history of the Institutional Revolutionary Party.
The PRI was created by military elites clinging to power after winning the Mexican Revolution. In 1928, Revolutionary leader Alvaro Obregon was assassinated and General Plutarco Elias Calles came into power, and in 1929, he created the PRI's predecessor, the National Revolutionary Party or PNR.
Mexico's presidential candidate for the MORENA party, Andres Manuel Lopez Obrador, is greeted by supporters during a campaign rally in Acapulco, Guerrero State, Mexico, June 25, 2018 ahead of the July 1 presidential election. /VCG Photo

Mexico's presidential candidate for the MORENA party, Andres Manuel Lopez Obrador, is greeted by supporters during a campaign rally in Acapulco, Guerrero State, Mexico, June 25, 2018 ahead of the July 1 presidential election. /VCG Photo

Historian Lorenzo Meyer said since the party's birth, it was designed to exercise the power Calles inherited. "That's how the PRI was born in 1929. The party was not born to compete for power. It already had power," he said.
In 1934, Calles named his successor, another revolutionary general, Lazaro Cardenas. 
In 1938, Cardenas nationalized the oil sector, creating the state-owned oil monopoly, PEMEX. He said he did it for the benefit of the nation: "This is a clear and evident case. It obligates the government to apply the law of expropriation, because they've broken labor contracts with their workers."
By 1946, the PRM changed its name for the last time to the Institutional Revolutionary Party, or PRI. A long period of economic growth, marked by authoritarian controls, characterized Mexico from the 1940s to the 1960s.
Employees of the National Electoral Institute arrange voting materials for the upcoming July 1 presidential election, in Ciudad Juarez, Mexico, June 25, 2018. /VCG Photo

Employees of the National Electoral Institute arrange voting materials for the upcoming July 1 presidential election, in Ciudad Juarez, Mexico, June 25, 2018. /VCG Photo

The world's political climate changed in 1968, and like other major capitals, Mexico City's streets also filled with democracy protestors. The Mexican government ordered armed security forces to fire on hundreds of protestors in Mexico's Tlatelolco district. 
One year later, in a famous speech before Mexico's PRI-controlled Congress, Diaz Ordaz said, "I fully assume the personal, ethical, social, judicial, political and historical responsibility for the government's decisions in relation to the events of the past year."
Despite the massacre, Mexico went ahead with plans to host the 1968 Summer Olympics.
The PRI's single rule party created the strongest central government that Mexico had ever had. In the rural areas and cities, its legacy is plain to see. A monument to the Mexican Revolution stands as a symbol of the Institutional Revolutionary Party's dominance.
Mario Aburto Martinez (R) is grabbed by security personnel after shooting PRI presidential candidate Luis Donaldo Colosio after a campaign rally in Tijuana, March 23, 1994. /VCG Photo

Mario Aburto Martinez (R) is grabbed by security personnel after shooting PRI presidential candidate Luis Donaldo Colosio after a campaign rally in Tijuana, March 23, 1994. /VCG Photo

The 1970s saw more government-sponsored violence against democracy protestors.
The 1985 Mexico City earthquake showed citizens the PRI government's inability to respond to the crisis. In the 1988 presidential election, a vote-counting computer system suddenly failed, and another PRI president came to power.
By the mid-1990s, a PRI government helped negotiate the creation of the North American Free Trade Agreement (NAFTA). But during that time, many still believed the PRI was a corrupt party.
In 1994, PRI presidential candidate Luis Donaldo Colosio promised to break with his party's authoritarian and corrupt past. On the campaign trail, Colosio said, "I see a Mexico hungry and thirsty for justice. I see the Mexican people aggrieved by laws imposed on them by those who should serve the people."
Iranian President Hassan Rouhani (R) welcomes former Mexican president Ernesto Zedillo (L), during a meeting with a group of ex-global leaders known as the Elders in Tehran, Jan. 28, 2014. /VCG Photo

Iranian President Hassan Rouhani (R) welcomes former Mexican president Ernesto Zedillo (L), during a meeting with a group of ex-global leaders known as the Elders in Tehran, Jan. 28, 2014. /VCG Photo

But political violence struck that same year and the PRI candidate was murdered in border city of Tijuana.
Massive political change came to Mexico in the year 2000, when for the first time ever, the PRI lost a presidential election. President Ernesto Zedillo, also of the PRI, peacefully handed power to Vicente Fox of the National Action Party.
Speaking to the nation during his last televised address, Zedillo said, "The Federal Electoral Institute has informed all Mexicans … that the next president of the Republic will be Vicente Fox."
The party lost two more presidential elections before returning to power in 2012.
Mexico's current presidential election polls indicate a wide-spread perception of PRI corruption, which has placed the party's candidate in a distant third place.
Now, left-leaning candidate Andres Manuel Lopez Obrador, who built a political career by denouncing the PRI, is now favored to win Mexico's 2018 presidential election, despite having a personal history that is tied to the Institutional Revolutionary Party.  
(Cover photo: Andres Manuel Lopez Obrador, presidential candidate of the National Regeneration Movement Party, speaks during a closing campaign rally in San Luis Potosi, Mexico, June 24, 2018. /VCG Photo)