Baikunthpur, Bihar (Vidhan Sabha constituency)
|Vidhan Sabha constituency|
|Lok Sabha constituency||17. Gopalganj (SC)|
|Electoral system||First past the post|
As per Delimitation of Parliamentary and Assembly constituencies Order, 2008, No. 99 Baikunthpur (Vidhan Sabha constituency) is composed of the following: Baikunthpur and Sidhwalia community development blocks; Rampur, Salempur Purvi, Salempur Paschimi, Hasanpur, Sadaua, Pipra and Khajuriya gram panchayats of Barauli CD Block.
In the 2015 state assembly elections, Mithlesh Tiwari of Bhartiya Janata Party(BJP) won the Baikunthpur assembly seat defeating his nearest rival Manjeet kumar singh Devdatt Prasad of JD(U). Contests in most years were multi cornered but only winners and runners are being mentioned. Devdatt Prasad of RJD defeated Manjeet Kumar Singh of JD(U) in October 2005 and February 2005. Manjeet Kumar Singh of SAP defeated Lal Babu Prasad Yadav of RJD in 2000. Lal Babu Prasad Yadav of JD defeated former Bihar Cabinet Minister Braj Kishor Narayan Singh of Congress in 1995.Shri Braj Kishor Narayan Singh of Congress defeated Devdatt Prasad of JD in 1990 and Deodat Rai of LD in 1985. Braj Kishor Narayan Singh representing Janata Party (JP) defeated Deodat Rai of Janata Party (Secular – Charan Singh) in 1980. Braj Kishor Narayan Singh representing JP defeated Deonandan Singh of CPI in 1977. 
- "Schedule – XIII of Constituencies Order, 2008 of Delimitation of Parliamentary and Assembly constituencies Order, 2008 of the Election Commission of India" (PDF). Schedule VI Bihar, Part A – Assembly constituencies, Part B – Parliamentary constituencies. Retrieved 2011-01-10.
- "Bihar - Baikunthpur". Bihar Assembly Elections Nov 2015 Results. Election Commission of India. Retrieved 2011-02-25.
- "26 - Baikunthpur Assembly Constituency". Partywise Comparison Since 1977. Election Commission of India. Retrieved 2011-02-25.