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.
Bloc party (politics)
In Mexico during the rule of the Institutional Revolutionary Party (PRI, 1929–2000), partidos paleros (satellite parties) included the Authentic Party of the Mexican Revolution and the Socialist Popular Party. These helped the PRI government give the superficial appearance of a competitive democratic system. In fact, both satellite parties fully supported the government and co-nominated the PRI candidates for the Presidency of Mexico until 1988.