The Party of the Democratic Revolution (PRD) was a leftist political party in Istalia, established in late 3940 by Antonio Casini. Casini had previously served on the central committee of the Istalian Communist Party, whith whom the PRD has retained close ties. At the time of its dissolution, the party was led by Antonio Mifsud, who took that position in 3974. After its last election, in 3987, the PRD controlled 169 MPs in the Chamber of Deputies.