Mahadewa (311) is a constituency of the Uttar Pradesh Legislative Assembly in the Basti district of Uttar Pradesh, India.

Mahadewa is one of five assembly constituencies in the Basti Lok Sabha constituency. Since 2008, this assembly constituency is numbered 311 amongst 403 constituencies.

Members of Legislative Assembly (MLAs)

#	Term	Member of Legislative Assembly	Party	From	To	Days	Comment
01	2nd Vidhan Sabha	Baldeo Singh	Independent	April 1957	March 1962	1,800
02	3rd Vidhan Sabha	Vishnu Pratap Singh	Indian National Congress	March 1962	March 1967	1,828
03	4th Vidhan Sabha	B. Lal	Swatantra Party	March 1967	April 1968	402
04	5th Vidhan Sabha	Ganga Prasad	Indian National Congress	February 1969	March 1974	1,832
05	7th Vidhan Sabha	Girdhari Lal	Janata Party	June 1977	February 1980	969	Constituency known as "Nagar East" and again renamed in 2008 as "Mahadewa"
06	08th Vidhan Sabha	Ram Awadh Prasad	Indian National Congress (Indira)	June 1980	March 1985	1,735
07	9th Vidhan Sabha	Ram Jiyawan	Indian National Congress	March 1985	November 1989	1,725
08	10th Vidhan Sabha	Ram Karan Arya	Janata Dal	December 1989	April 1991	488
09	11th Vidhan Sabha	Ved Prakash	Bhartiya Janata Party	June 1991	December 1992	533
10	12th Vidhan Sabha	Ram Karan Arya	Samajwadi Party	December 1993	October 1995	693
11	13th Vidhan Sabha	Ved Prakash	Bahujan Samaj Party	October 1996	March 2002	1,967
12	14th Vidhan Sabha	Ram Karan Arya	Samajwadi Party	February 2002	May 2007	1,902
13	15th Vidhan Sabha	Doodhram	Bahujan Samaj Party	May 2007	March 2012	1,762
14	16th Vidhan Sabha	Ram Karan Arya	Samajwadi Party	March 2012	March 2017	1,829
15	17th Vidhan Sabha	Ravi Kumar Sonkar	Bhartiya Janata Party	March 2017	March 2022
16	18th Uttar Pradesh Assembly	Doodhram	Suheldev Bhartiya Samaj Party	March 2022	Incumbent

Election results

2022

2022 Uttar Pradesh Legislative Assembly election: Mahadewa

Party		Candidate	Votes	%	±%
	SBSP	Doodhram
	AAP	Ramsuresh (Kallu Bhai)

2017

Bharatiya Janta Party candidate Ravi Kumar Sonkar won in last Assembly election of 2017 Uttar Pradesh Legislative Elections defeating Bahujan Samaj Party candidate Doodhram by a margin of 25,884 votes.

2017 General Elections: Mahadewa (SC)

Party		Candidate	Votes	%	±%
	BJP	Ravi Kumar Sonkar	82,429	41.82	+35.86
	BSP	Doodhram	56,545	28.69	-6.54
	SP	Ram Karan Arya	47,914	24.31	-21.53
	NISHAD	Govardhan	5,639	2.86	+2.86
	NOTA	None Of The Above	2,231	1.13	+1.13
		Remainder 5 candidates	4,559	2.29	N/A
Majority			25,884	12.99	+2.38
Turnout			1,99,317	58.42	+1.58
	BJP gain from SP		Swing	+8.54

16th Vidhan Sabha: 2012 General Elections

2012 General Elections: Mahadewa (SC)

Party		Candidate	Votes	%	±%
	SP	Ram Karan Arya	83,202	45.84
	BSP	Doodhram	63,943	35.23
	BJP	Beena Rai	10,816	5.96
	INC	Gauri Shankar	7,889	4.35
	SBSP	Kripa Shankar	4,797	2.64
	Independent	Lav Kush	3,848	2.12
	PECP	Govardhan	3,089	1.70
		Remainder 5 candidates	3,919	2.16
Majority			19,259	10.61
Turnout			1,81,503	56.84
	SP gain from BSP		Swing