 In 1939, Ali formally joined the Congress.To assist Congress' campaign, Ali organised meetings with peasants in the districts of Khulna and Jessore, attacking the zamindars and supporters of British imperialism and organizing means to empower peasants by encouraging them not to pay rent to the government.In 1942 when Fazlul Huq formed the second coalition Ministry, Syed Nausher Ali became the Speaker of the Legislative Assembly from 1 March 1943 to 14 May 1946.