Baitha died late last night. He was 100 years old and survived by a son and five daughters.
Chief Minister Nitish Kumar condoled the death of Baitha and announced that his cremation would take place with state honour.
In his condolence message, the CM described Baitha as a great politician and social worker.
Baitha was elected MLA for three times from Bagha reserved seat since 1962. Later, he represented Sikarpur reserved seat in West Champaran in the state Legislative Assembly in 1985.
He was minister in Congress government headed by Daroga Prasad Rai and Jagannath Mishra.