Due to her association with the National Planning Committee as a member of its Women Sub Committee, Das moved to Mumbai that year and stayed there for two years. Her activities gave her opportunities to work alongside
Mridula Sarabhai and
Vijaya Laxmi Pandit as well as
Omeo Kumar Das, then sitting member of the
Assam Legislative Assembly, whom she married in 1942. She returned to Assam after her marriage and formed two organizations,
Shanti Bahini and
Mrityu Bahini. In September 1942, Das and her comrades of
Mrityu Bahini led a protest to the local police station holding the
National Flag of India and it was at this procession, the police opened fire which led to the death of her colleague,
Kanaklata Barua. By that time, she had already become a member of the
All India Congress Committee and the convener of the women's wing of the Assam Congress Committee and reportedly worked to get Assam out of the grouping with
East Pakistan. Pushpalata Das herself was nominated to the
Rajya Sabha in 1951 and held the position 1961. It was during this period she led the 1957 election campaign of
Chandraprava Saikiani from Bajali constituency. Later, she was elected to the
Congress Working Committee in 1958 and the next year, she visited a number of East European countries as a member of the parliamentary delegation. In 1967, she contested from
Dhekiajuli when her husband vacated the constituency, winning the election representing
Indian National Congress After the death of her husband on 23 January 1975, She served as the chairperson of the Assam chapter of the All India Khadi Board and chaired the state boards of Bhudan and Gramdan initiatives. ==Award and honours==