One of the ways mussolini maintained his power in italy was by outlawing political parties.
Benito Amilcare Andrea Mussolini was Prime Minister of the Kingdom of Italy from his golpe in 1922 to 1943, and Duce of Fascism from 1919 until hi was executed in 1945 during the Italian civil war. As dictator of Italy and founder of fascism, Mussolini inspired numerous totalitarian rulers such as Adolf Hitler.
Furthermore, he had been one of the head members of the National Directorate of the Italian Socialist Party (PSI) from 1910 to 1914.