Maharajganj is an assembly constituency in Siwan district in the Indian state of Bihar.

[1] In the 2015 Bihar Legislative Assembly Elections, Hemnarayan Sah of JDU won by defeating Devranjan Singh of Bharatiya Janta Party.

[4] Contests in most years were multi cornered but only winners and runners up are being mentioned.

Baidya Nath Pande of JD defeated Damodar Singh of Congress in 1995.

Uma Shankar Singh of JP defeated Anusya Jayaswal of Congress in 1985.