Chanpatia (Vidhan Sabha constituency)
|Vidhan Sabha constituency|
|Lok Sabha constituency||2. Paschim Champaran|
|Electoral system||First past the post|
As per orders of Delimitation of Parliamentary and Assembly constituencies Order, 2008, 7. Chanpatia (Vidhan Sabha constituency) is composed of the following: Chanpatia community development block; and Chanayan Bandh, Mahana Gani, Ratanmala, Sarisawa, Barawa Semaraghat, Harpur Garawa, Dumari, Mahanwa Rampurwa, Dhokarahan, Baithania Bhanachak and Nautan Khurd gram panchayats of Majhaulia CD Block.
In the November 2010 state assembly elections, Chandra Mohan Rai of BJP won the 7. Chanpatia assembly seat defeating his nearest rival Ejaj Hussain of BSP. Contests in most years were multi cornered but only winners and runners are being mentioned. Satish Chandra Dubey of BJP defeated Vishwa Mohan Sharma of Congress in October 2005 and Sharfuddin Shekh of SJP(R) in February 2005. Krishna Kumar Mishra of BJP defeated Sharfuddin Shekh of SJP(R) in 2000. Birbal Sharma of CPI defeated Bharat Rai of Congress in 1995. Krishna Kumar Mishra of JD defeated Birbal Sharma of CPI in 1990. Birbal Sharma of CPI defeated Prabhat Kishore Dwivedi of Congress in 1985 and 1980. Vir Singh of Janata Party defeated Birwal Sharma 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". Schedule VI Bihar, Part A – Assembly constituencies, Part B – Parliamentary constituencies. Retrieved 2011-01-10.
- "Chanpatia election results since 1977". Travel India Guide. Retrieved 2010-12-20.
- "7 - Chanpatia Assembly Constituency". Partywise Comparison Since 1977. Election Commission of India. Retrieved 2010-12-20.