|— Vidhan Sabha constituency —|
|Lok Sabha constituency||Bettiah|
Election results 
In the October 2005 and February 2005 state assembly elections, Shyam Bihari Prasad of JD(U) won the Adapur assembly seat defeating his nearest rival Sabir Ali of LJP in October 2005, and Rambabu Prasad Yadav of RJD in February 2005. Contests in most years were multi cornered but only winners and runners are being mentioned. Virendra Prasad, Independent, defeated Shyam Behari Prasad of RJD in 2000. Braj Bihari Prasad of JD defeated Virendra Prasad, Independent, in 1995 and Mukti Narayan Ray of CPI(M-L) in 1990. Hari Shankar Yadav of Congress defeated Braj Bihari Prasad, Independent, in 1985. Sharminuddin Hasmi of Janata Party (Secular – Charan Singh) defeated Sajawal Ray of Congress in 1980. Ram Prit Rai of Congress defeated Sharminuddin Hasmi of Janata Party in 1977.
- "General Elections, 2004 - Details for Assembly Segments of Parliamentary Constituencies". 2. Bettiah. Election Commission of India. Retrieved 2011-10-25.
- "Schedule – XIII of Constituencies Order, 2008 of Delimitation of Parliamentary and Assembly constituencies Order, 2008 of the Election Commission of India". Schedule VI Bihar, Part A – Assembly constituencies, Part B – Parliamentary constituencies. Retrieved 2011-01-10.
- "Adapur election results from 1977". Travel India Guide. Retrieved 2011-01-05.
- "13 - Adapur Assembly Constituency". Partywise Comparison Since 1977. Election Commission of India. Retrieved 2011-01-06.
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