President of the Chamber of Deputies of the Fourth Parliament (from 26 June 1963 to 14 May 1968). A member of the judiciary who was elected to the Chamber of Deputies in 1948, he was Deputy President of the Chamber from 12 June 1958 to 15 May 1963. Ducci retained his post as Deputy President under the Fourth Parliament until 26 June 1963 when he was asked to become President to replace Giovanni Leone, who had been appointed Prime Minister. Re-elected to the Chamber in 1968 and 1976, he was+A75:C75 a judge of the Constitutional Court from 1977 to 1986.