Yahya Khan gave legal framework order to hold elections after the 1962 Constitution was repealed. He held discussions with prominent political party leaders in April-July 1969 to learn their perspectives. The majority of them demanded that the 1956 Constitution should be reinstated, claiming that its abrogation was illegal and that the country should return to its previous constitutional position.
He appointed a team to draught a new constitutional formula. On March 30, 1970 the Legal Framework Order of 1970 was established. After this one Unit was dissolved and west Pakistan was converted into four provinces Punjab, Sindh, KPK and Baluchistan. The principle of parity was replaced by the principle of the direct ballot.