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.
Revolutionary Socialist Party (Marxist–Leninist)
Revolutionary Socialist Party (Marxist–Leninist) (in Spanish: " Partido Socialista Revolucionario (Marxista-Leninista)", PSR(m-l)) was a political party in Peru founded in 1978 through a split in the Revolutionary Socialist Party. Its leaders included Antonio Aragón, Carlos Urrutia and Andrés Avelino Mar. It participated in the 1980 general elections on the lists of Popular Democratic Unity.