 He ran for governor of Santa Fe on the 1995 election along other Justicialist candidates, under the electoral system called "Ley de Lemas", which allowed several factions of the same party to present candidates for the main election and add up their votes.Horacio Usandizaga ran for governor and obtained the majority of votes; but this system ultimately favored the "pure" Justicialist candidate Jorge Obeid, whose votes were supplemented by Cavallero's.Having severed his ties with the Socialist Party, Cavallero remained a supporter of the increasingly conservative and unpopular Menem administration.