Sonpur Assembly constituency, often spelt Sonepur, is in Saran district in the Indian state of Bihar.
Ram Sundar Das, sitting MLA from Sonpur 1977–1980, served as Bihar's Chief Minister briefly in 1979.
Overview As per Delimitation of Parliamentary and Assembly constituencies Order, 2008, No. 122 Sonpur Assembly constituency is composed of the following: Sonpur and Dighwara C.D. blocks.
Sonpur Assembly constituency is part of No. 20 Saran (Lok Sabha constituency). It was earlier part of Chapra (Lok Sabha constituency).
Members of Vidhan Sabha YearMemberParty1952Jagadish Sharma1957Ram Binod Singh1962Sheo Bachan Singh1967Ram Jaipal Singh Yadav196919721977Ram Sunder Das1980Lalu Prasad Yadav19851990Raj Kumar Roy19952000Vinay Kumar Singh2005Ramanuj Prasad Yadav20052010Vinay Kumar Singh2015Ramanuj Prasad Yadav20202025Vinay Kumar Singh
Election results 2025
2020
2015 Ramanuj Prasad Yadav (RJD): 86,082 votes Vinay Kumar Singh (BJP): 49,686 votes
1980 Lalu Prasad Yadav (Janata-Secular): 45,041 votes Jawahar Prasad Singh (Indira Congress): 35,874 votes Ram Sunder Das (Janata Party): 10,396 votes
1977 Ram Sunder Das (JNP): 40,747 votes Rameshwar Prasad Rai (IND): 15,411 votes
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