The first non-Congress Chief Minister of Bihar was Mahamaya Prasad Sinha, who assumed office on March 5, 1967. He led a coalition government under the banner of the Samyukta Vidhayak Dal (SVD), marking a significant departure from Congress dominance in Bihar. Sinha's government was supported by a coalition of multiple political parties, including the Bharatiya Jana Sangh (BJS), the Samyukta Socialist Party (SSP), and others. However, his tenure was marked by political instability and frequent challenges from within the coalition, resulting in a short stint as Chief Minister. Karpoori Thakur, on the other hand, became Chief Minister later and was also a prominent non-Congress leader in Bihar. He served twice as CM, first from December 1970 to June 1971 and then from December 1977 to April 1979, representing the Janata Party during his second tenure. Thakur is remembered for his focus on social justice and pro-backward caste policies, including introducing reservations for backward classes in government jobs and educational institutions.