 On April 20–21, 1947, the "Blocco del popolo" – a coalition of the communist PCI and socialist PSI – won a surprise victory in the elections for the Constituent Assembly of the autonomous region of Sicily.The "Blocco" obtained 29 percent of the vote, while the (Christian Democracy) got 20.5% and the Common Man-Monarchist bloc came third with 14%.Li Causi furnished an explanation for the success of the left-wing block