Ram Sundar Das

Ironically he joined Chandra Shekhar's Samajwadi Janata Party around 1995 though Chandra Shekhar had opposed his candidature for CM's post. Ram Sundar Das remained with that party until 2008, and in another twist joined Janata Dal (United) that time, though those people had also opposed his candidature for CM's post back in 1990. He died on 6 March 2015 at the age of 94.

In the late 1980s, some of the remnants of Janata Party had come together to form Janata Dal, which formed a coalition government at the national level following the 1989 Indian general election. In 1990 Bihar Legislative Assembly election, Janata Dal won the largest number of seats and sought to form government with the outside support of BJP and Communists. Das was a contender for Chief Ministership pitted against Raghunath Jha and Lalu Prasad Yadav. Yadav was supported by Devi Lal and Nitish Kumar, Jha by Chandra Shekhar and Das by Prime Minister, VP Singh.

In fight in the party broke over the question of Chief Minister, Karpoori Thakur's decision to implement the Mungeri Lal Commission report, that recommended the institution of reservations for Backward Castes in government jobs. Upper caste members of Janata Party tried to water down the reservation policy by unseating Thakur as Chief Minister. To wean away Dalit MLAs, Das, a Dalit himself, was nominated as the candidate. Though Das and Thakur were both Socialist, Das was considered more moderate and accommodative than the Chief Minister. Thakur resigned and Das became the Chief Minister of Bihar on 21 April 1979. The reservation law was weakened by allowing upper castes to obtain a greater percentage of government jobs. The internal tensions in Janata Party caused it to split into multiple factions which led to Congress returning to power in 1980.

In the 1977 Bihar Legislative Assembly election, that led to a decisive defeat of the ruling Indian National Congress at the hands of Janata party, Das was elected as the MLA for Sonpur. Janata Party was a recent amalgam of disparate groups including Indian National Congress (O), Bharatiya Lok Dal, Socialists and Jana Sangh.

He played an active role in 1942 Quit India Movement. Das served as a functionary in Congress Socialist Party in his native place Sonpur. The Congress Socialist Party, through a series of mergers became a part of the Praja Socialist Party (PSP). Das served as member of PSP's Bihar Provincial Executive Council. In 1957 Lok Sabha elections, he was Socialists' losing candidate from Hajipur. Later he would win the seat twice. In 1968, he was elected as a Member of Bihar's legislative council and continued in this role until 1977.

Ram Sundar Das (Hindi: राम सुन्दर दास; 9 January 1921 – 6 March 2015) was an Indian politician and former Chief Minister of Bihar state. He was a two-time Member of Parliament from Hajipur constituency.

Das was born on 9 January 1921 into Chamar caste in Gangajal near Sonpur, Saran District in Bihar. He matriculated from a school in Sonpur and attended Vidyasagar College in Calcutta. He dropped out of college to join the Indian freedom movement. He was married to Savita Devi in 1956 and had three children, two sons and one daughter.