With this agreement, the DC recognized the equal dignity of the so-called "secular parties" of the majority (i.e., the Socialists, Social Democrats, Liberals and Republicans) and also guaranteed an alternation of government with them.

In June 1981 republican Giovanni Spadolini became the first non-christian democrat to sworn in as Prime Minister of Italy.

With the birth of the Pentapartito, the possibility of the growth of the majority toward the Italian Communist Party (PCI) was finally dismissed.

In its latter period, during which the lodge was headed by Licio Gelli, P2 was implicated in numerous Italian crimes and mysteries, including the collapse of the Vatican-affiliated Banco Ambrosiano, the murders of journalist Mino Pecorelli and banker Roberto Calvi, and corruption cases within the nationwide bribe scandal Tangentopoli.

[8] The lodge had among its members prominent journalists, Members of Parliament, industrialists, and military leaders—including Silvio Berlusconi, who later became Prime Minister of Italy; the Savoy pretender to the Italian throne Victor Emmanuel;[9] and the heads of all three Italian intelligence services (at the time SISDE, SISMI and CESIS).