Later, he joined politics and was elected a member of the Bombay Legislative Council from the constituency of Sindh in the 1934 election. Meanwhile he remained active in politics through the platform of the Sindh Ittehad party. He was also elected Mayor of the Municipality of Karachi for the term from May 1941 to May 1942. Afterwards, he joined Jinnah's All India Muslim League; that was launching a movement for establishment of an independent state for Muslim population of India within the sub-continent (which emerged as Pakistan later). Quaid e Azam led this movement and Hashim Gazdar was a friend of Muhammed Ali Jinnah on the platform of All India Muslim League to achieve the goal of a separate Muslim state. During this course, he was again elected a member of Legislative Assembly from Sindh; and remained the Deputy Speaker thereof.