Mexican Revolution
The PRI, or Institutional Revolutionary Party is one of the major lasting legacies of the Mexican Revolution; its first iteration was the Partido Nacional Revolucionario founded in 1929 under Northern revolutionary general and president of Mexico (1924–1928) Plutarco Elías Calles, following the assassination of president-elect (and former president) Álvaro Obregón in 1928. The establishment of the party created an enduring structure that managed not only presidential succession but also groups with competing interests. Initially, Calles remained the power behind the presidency during a period known as the Maximato, but his hand-picked presidential candidate, Lázaro Cárdenas, won a power struggle with Calles, expelling him from the country. Cárdenas reorganized the party that Calles founded, creating formal sectors for interest groups, including one for the Mexican military. The reorganized party was named Party of the Mexican Revolution. In 1946, the party again changed its name to the Institutional Revolutionary Party. The party under its various names held the presidency uninterruptedly from 1929 to 2000, and again from 2012 to 2018 under President Enrique Peña Nieto.
Corruption in Mexico
Although the Institutional Revolutionary Party (PRI) came to power through cooptation and peace, it maintained power for 71 years straight (1929 to 2000) by establishing patronage networks and relying on personalistic measures. That is, Mexico functioned as a one-party state and was characterized by a system in which politicians provided bribes to their constituents in exchange for support and votes for reelection. This type of clientelism constructed a platform through which political corruption had the opportunity to flourish: little political competition and organization outside of the party existed; it was not possible to independently contest the PRI system. Political contestation equated to political, economic, and social isolation and neglect. The party remained securely in power, and government accountability was low. Hierarchization was the norm. Power was consolidated in the hands of an elite few, and even more narrowly, the president controlled almost all of the practical power across the three branches of government. This central figure had both the formal and informal power to exercise extralegal authority over the judiciary and legislature and to relegate these other branches to the executive's individual political will.