Until April 5, 1992, Peru had a multiparty system and numerous political parties, some of which had been in existence for several decades. Yet, in 1990 the Peruvian electorate by and large rejected established parties and voted for a virtual unknown from outside the traditional party system. Alberto Fujimori's rapid and sudden rise to power and the resulting government with no political party base signified a crisis for Peru's party system, and a crisis of representation more generally. These crises resulted from the severity of the socioeconomic situation, and also from the poor performance of several of the traditional parties in government.

Data as of September 1992