The reason for multiple controversies and constant political weapon of the Political Parties of the governing Coalition and, of course, of the Communist Party, is the binominal majority electoral system that has existed since 1989 for legislative elections. Thus it has been described as "illegitimate", "perverse", "undemocratic", etc., by leftist ideologues and preferably by theoreticians trained in foreign universities, some of dubious academic quality, in approaches surpassed by history and what is worse , by the current world political reality.Motivo de múltiples polémicas y constante arma política de los Partidos Políticos de la Concertación gobernante y desde luego, del Partido Comunista, es el sistema electoral mayoritario binominal existente desde 1989 para las elecciones legislativas. Asi ha sido calificado de "ilegítimo", "perverso", "antidemocrático", etc., por los ideólogos izquierdistas y preferentemente por teóricos formados en Universidades extranjeras, algunas de dudosa calidad académica, en planteamientos superados por la historia y lo que es peor, por la actual realidad política mundial.