[3] Moro's main aim was to widen the democratic base of the government, including the PCI in the parliamentary majority: the cabinets should have been able to represent a larger number of voters and parties.

Such a move made an eventual cooperation more acceptable for Christian democratic voters, and the two parties began an intense parliamentary debate, in a moment of deep social crises.

In March, the crisis was overcome by the intervention of Aldo Moro, who proposed a new cabinet again formed only by DC politicians, but this time with positive confidence votes from the other parties, including the PCI.

Despite the huge shock that the kidnapping and the consecutive murder of Aldo Moro caused on the Italian politics, Andreotti continued as Prime Minister of the "National Solidarity" government with the support of the PCI.

[citation needed] In June 1978, the PCI gave its approval and ultimately active support to a campaign against President Giovanni Leone, accused of being involved in the Lockheed bribery scandal.