The Portuguese legislative election of 1985 took place on 6 October. In June of the same year, the former Prime-Minister, Mário Soares, had resigned from the job due to the lack of parliamentary support, the government was composed by a coalition of the two major parties, the center-right Social Democratic and the center-left Socialist, in what was called the Central Bloc, however this was an unstable balance of forces and several members of each party opposed such alliance. The new leader of the Social Democratic Party, Cavaco Silva, elected in May, was among those that never supported such alliance, and short after being elected leader of the party made the coalition fall in July.