 However, the success of the operation of the National Right by anti-constitutional, neo-fascist MSI, gave a golden share to the PSI, because the Christian Democrats had no more possibilities to look at their right to build a democratic government, the alliance with the Socialists becoming quite obliged.Incumbent Prime Minister Giulio Andreotti tried to continue his centrist strategy, but his attempt only lasted a year.Former Premier Mariano Rumor so returned at the head of the government with his traditional centre-left alliance between DC, PSI, PSDI and PRI, but he was abandoned by the Republicans after eight months.