Institutional Revolutionary Party
The Institutional Revolutionary Party (, PRI) is a Mexican political party founded in 1929 that held uninterrupted power in the country for 71 years from 1929 to 2000, first as the National Revolutionary Party (, PNR), then as the Party of the Mexican Revolution (, PRM), and finally renaming itself as the Institutional Revolutionary Party in 1946.
National Regeneration Movement
The National Regeneration Movement (), also known by its acronym MORENA (Spanish for "dark-skinned", alluding to Mexico's national patroness the "Dark-skinned Virgin (Mary)" Our Lady of Guadalupe), is a Cardenist and social-democratic political party in Mexico. Established as a non-profit organization in 2011 and formally registered as a political party in 2014, it was led by three-time presidential candidate and current President of Mexico, Andrés Manuel López Obrador until 12 December 2017, when he registered himself as a candidate for the party's nomination, and was succeeded by Yeidckol Polevnsky Gurwitz.