Mexico’s democratic transition provides a revealing case study of a semi-authoritarian political model evolving incrementally into an electoral democracy over two decades. One of the special features of that transition was its slow progress compared to its peers in Latin America, especially given its proximity to the United States, the most influential democracy in the last half of the 20th century. The first attempt to introduce fair, competitive elections occurred under the leadership of Miguel de la Madrid in 1983, but he reversed direction when he was opposed by leading politicians from his own party. His successor, Carlos Salinas (1988–1994), chose to pursue economic liberalization, opening up Mexico to greater competition globally, and negotiating an agreement with Canada and the United States (North American Free Trade Agreement, or NAFTA), while maintaining an authoritarian presidency. During this era, proactive actors that fomented significant political change came from numerous sources. The following were particularly noteworthy in explaining Mexico’s shift to a democratic model: dissident elites who pushed for democracy inside the dominant Institutional Revolutionary Party (PRI); dissident elites who left PRI to form the most successful opposition parties in the 20th century, including the founding of the Party of the Democratic Revolution (PRD) in 1989; social and civic movements originating from government incompetence in addressing the results of the 1985 earthquake in Mexico City, the widespread fraud during the 1988 presidential election, and the Zapatista Army of National Liberation uprising in 1994; the altered composition of political leadership from the establishment and the opposition characterized by stronger backgrounds in local, elective offices, party leadership, and nonpolitical careers; new electoral laws reinforcing independent decision-making regarding electoral practices and outcomes in the 1990s; and the introduction of new political actors supportive of democratic change, such as the Catholic Church.