[2] In 1958, once elected to the Sicilian Regional Assembly,[3] Macaluso was one of the creators of milazzismo, named after Silvio Milazzo, elected president of Sicily, which led to the birth of a regional government supported by the PCI, the Italian Socialist Party, the National Monarchist Party, and the Italian Social Movement.

[4] In the party, Macaluso was a member of the wing called migliorismo, together with the future Italian president Giorgio Napolitano.

In those years, he was a member of the PCI's political secretariat under Togliatti, Luigi Longo, and Enrico Berlinguer.

In his articles from the 2000s, Macaluso always supported the anchoring of a modern secular force of the Italian left to the values of European socialism.

The main criticism he addressed to the PD, is related to the lack of socialist inspiration in the party's identity profile.