2016–2017 Tamil Nadu Legislative Assembly by-elections

During the 2016–2017 timeframe, by-elections were held in Tamil Nadu, India, due to the following events:

• 25 May 2016 - Tirupparankundram AIADMK MLA S M Seenivel died
• 5 December 2016 - Radhakrishnan Nagar AIADMK MLA and CM of Tamil Nadu J. Jayalalithaa died

Tamil Nadu assembly by-election, 2016-17

← 2011-16 19 November 2016 and 21 December 2017 2019 →
vacant seats in the Legislature of Tamil Nadu
First party Second party Third party   Leader Edappadi K. Palaniswami T. T. V. Dhinakaran M. K. Stalin Party AIADMK Independent DMK Alliance AIADMK+ SPA Seats won 3 [a] 1 0

Events leading to By-Election

Date	Event	ADMK	DMK	INC	IUML	Independent	Vacant	Total
19 May 2016	2016 Tamil Nadu Legislative Assembly election (Election to Aravakurichi and Thanjavur were cancelled by the EC on confirmed reports of bribing voters)	134	89	8	1	0	2	232
25 May 2016	Tirupparankundram AIADMK MLA S M Seenivel passes away [1]	133	89	8	1	0	3	231
22 November 2016	First By-Election (19 November 2016)[2]	136	89	8	1	0	0	234
6 December 2016	RK Nagar AIADMK MLA, Tamil Nadu CM J. Jayalalithaa Passes Away[3]	135	89	8	1	0	1	233
18 September 2017	Disqualification of 18 dissident AIADMK MLAs [4]	117	89	8	1	0	19	215
24 December 2017	Second By-Election (21 December 2017)[5]	117	89	8	1	1	18	216
2 August 2018	Tirupparankundram AIADMK MLA A.K. Bose passes away [6]	116	89	8	1	1	19	215
7 August 2018	Tiruvarur DMK MLA, Former CM of Tamil Nadu CM M Karunanidhi Passes Away[7]	116	88	8	1	1	20	214
20 February 2019	Hosur AIADMK MLA P. Balakrishna Reddy convicted by special court[8]	115	88	8	1	1	21	213
21 March 2019	Sulur AIADMK MLA R Kanagaraj passes away[9]	114	88	8	1	1	22	212
23 May 2019	Third By-Election (18 April 2019)[10]	123	101	8	1	1	0	234
29 May 2019	Nanguneri, Congress MLA Vasanthakumar resigned after being elected to Lok Sabha[11]	123	101	7	1	1	1	233
14 June 2019	Vikravandi DMK MLA K Radhamani passes away	123	100	7	1	1	2	232

The 123 AIADMK members include three independents who contested under the AIADMK symbol. They are M.Thamimun Ansari from Nagapattinam (Manithaneya Jananayaga Katchi), U. Thaniyarasu from Kangayam (Tamil Nadu Kongu Ilaingar Peravai) and Karunas from Tiruvadanai (Mukkulathor Pulipadai).

November 2018 by-elections

On 26 October 2016, the Election Commission announced that the election for Thiruparankundram, Aravakurichi ^[a] and Thanjavur constituencies would be held on 19 November 2016.^[12] The outcome was:^{[citation needed]}

Constituency	Contestant DMK	Contestant ADMK	Winning candidate	Winning party	Margin
Aravakurichi [a]	K. C. Palanisamy	V. Senthil Balaji	V. Senthil Balaji	AIADMK	23,661
Thanjavur	Anjugam Boopathy	M. Rangaswamy	M. Rangaswamy	AIADMK	26,874
Thiruparankundram	Saravanan	A. K. Bose	A. K. Bose	AIADMK	42,670

Aravakuruchi

2016 Tamil Nadu Legislative Assembly election: Aravakurichi

Party		Candidate	Votes	%	±%
	AIADMK	V. Senthil Balaji	88,068	53.51
	DMK	K. C. Palanisamy	64,407	39.13
	BJP	S. Prabhu	3,162	1.92	New
	NOTA	None of the above	1,538	0.93
	DMDK	M. Muthu	1,513	0.92	New
Majority			23,661	14.38
Turnout			1,64,582	82.15
	AIADMK gain from DMK		Swing

Tanjore

2016 Tamil Nadu Legislative Assembly election: Thanjavur

Party		Candidate	Votes	%	±%
	AIADMK	M. Rangaswamy	1,01,362	54.37
	DMK	Anjugam Boopathy	74,488	39.95
	BJP	Ramalingam M S	3,806	2.04
	NOTA	None of the above	2,295	1.23
	DMDK	Abdullah Sait V	1,534	0.82
Majority			26,874	14.41
Turnout			1,86,444	69.37
	AIADMK hold		Swing

Thirupparakundram

2016 Tamil Nadu Legislative Assembly bye-election: Thiruparankundram^[13][14]

Party		Candidate	Votes	%	±%
	AIADMK	A. K. Bose	113,032	55.65	8.33
	DMK	P. Saravanan	70,362	36.73	1.05
	NOTA	None of the Above	2,214	1.10	0.48
Majority			42,670	18.92	7.28
Turnout			203,100	70.89	0.26
	AIADMK hold		Swing	8.33

December 2017 by-elections

On 24 November 2017, the Election Commission announced that the election for Radhakrishnan Nagar constituency would be held on 21 December 2017.^[15][16]

2017 Tamil Nadu Legislative Assembly By-election: Dr. Radhakrishnan Nagar

Party		Candidate	Votes	%	±%
	Independent	T. T. V. Dhinakaran	89,013	50.32	N/A
	AIADMK	E. Madhusudhnan	48,306	27.31	−28.56
	DMK	N. Marudhu Ganesh	24,651	13.94	−19.2
	NTK	Kalaikottuthayam	3,802	2.15	N/A
	None of the Above	NOTA	2,373	1.34	−0.31
Margin of victory			40,707	23.01	+0.28
Turnout			1,76,890	77.68	+9.32
	Independent gain from AIADMK		Swing

See also

• Elections in Tamil Nadu
• Government of Tamil Nadu
• Tamil Nadu Legislative Assembly