Cuauhtemoc Cardenas vs Jamil Mahuad

Cárdenas ran as the candidate of the National Democratic Front against PRI candidate Carlos Salinas de Gortari. The election was marred by widespread allegations of fraud, with the official count giving Salinas a narrow victory, leading to protests and the formation of the PRD.

Cárdenas, along with other leftist politicians, founded the PRD after the disputed 1988 presidential election. The party became the main left-wing opposition to the PRI, advocating for democracy and social justice.

Cárdenas won the first direct election for the mayor of Mexico City, becoming the first leftist to hold the post. His administration focused on social programs, public security, and decentralization, setting a precedent for future leftist governance.

Cárdenas left the PRD, citing internal divisions and the party's shift away from its founding principles. His departure weakened the PRD and reflected the fragmentation of the Mexican left.

Mahuad signed the Brasilia Presidential Act on October 26, 1998, ending the long-standing border dispute with Peru. The treaty resolved a conflict that had caused multiple wars and established a definitive border, earning Mahuad international recognition.

President Mahuad announced the adoption of the U.S. dollar as Ecuador's official currency on January 9, 2000, to combat hyperinflation and stabilize the economy. The policy ended the sucre's circulation and remains in effect, fundamentally reshaping Ecuador's monetary system.

Following widespread protests led by indigenous groups and a military uprising, Mahuad was forced to resign on January 21, 2000. Vice President Gustavo Noboa assumed power, marking the end of Mahuad's presidency after only 18 months.