Indian general election in Tamil Nadu, 1984

← 1980 December 1984 1989 →
39 (of 514) seats in the Lok Sabha
Registered	30,958,080
Turnout	22,591,943 (72.98%) 6.22%
First party Second party   Leader M. G. Ramachandran M. Karunanidhi Party AIADMK DMK Alliance Congress alliance Janata alliance Leader's seat Did not contest Did not contest Seats won 37 2 Seat change 15 14 Popular vote 12,941,942 8,006,513 Percentage 59.87% 37.04% Swing 2.87% 0.73%
1984 Election map (by constituencies) Green = INC+ and Blue = JP+

The 1984 Indian general election polls in Tamil Nadu were held for 39 seats in the state. The result was a landslide victory for Indian National Congress and its ally All India Anna Dravida Munnetra Kazhagam, winning 37 out of 39 seats. The other 2 seats were won by the opposition, Dravida Munnetra Kazhagam. This marks the start of the dominance of INC-AIADMK, for the next decade winning 38 seats in 1989 election and all 39 seats in 1991 election. The allocation of seats were done what was later dubbed, "The M.G.R formula". Where the regional party would contest 70% of the assembly seats and the national party would be given 70% of the Lok Sabha seats.

Seat Allotment

Congress Front

No.	Party		Election Symbol	Leader	Seats
1.		Indian National Congress		Rajiv Gandhi	26
2.		All India Anna Dravida Munnetra Kazhagam		M. G. Ramachandran	12
3.		Gandhi Kamaraj National Congress		Kumari Ananthan	1

Janata Alliance

No.	Party		Election Symbol	Leader	Seats
1.		Dravida Munnetra Kazhagam		M. Karunanidhi	27
2.		Janata Party		Era.Sezilyan	5
3.		Communist Party of India		A.Nallasivam	3
4.		Communist Party of India		P.Manickam	3
4.		Tamilnadu Congress			1

Voting and results

Alliance		Party		Popular Vote	Percentage	Swing	Seats won	Seat Change
	AIADMK+		Indian National Congress	8,755,871	40.51%	8.89%	25	5
			All India Anna Dravida Munnetra Kazhagam	3,968,967	18.36%	7.02%	12	10
			Gandhi Kamaraj National Congress	217,104	1.00%	new party	0	new party
			Total	12,941,942	59.87%	2.87%	37	15
	DMK+		Dravida Munnetra Kazhagam	5,597,507	25.90%	2.89%	2	14
			Janata Party	911,931	4.22%	3.74%	0
			Communist Party of India	738,106	3.41%	0.18%	0
			Communist Party of India (Marxist)	614,893	2.84%	0.37%	0
			Tamil Nadu Congress	144,076	0.67%	new party	0	new party
			Total	8,006,513	37.04%	0.73%	2	14
	Indian National Congress (Jagjivan)			56,704	0.26%	new party	0	new party
	Bharatiya Janata Party			15,462	0.07%	new party	0	new party
	Independents			593,382	2.76%	1.65%	0	1
Total				21,614,003	100.00%		39
Valid Votes				21,614,003	95.67%
Invalid Votes				977,940	4.33%
Total Votes				22,591,943	100.00%
Reigstered Voters/Turnout				30,958,080	72.98%	6.22%

• The seats from 1980 election, represents the seats of the coalition in this election, and the seats represented from Congress is from the Indira faction.

List of Elected MPs

Post-election Union Council of Ministers from Tamil Nadu

Ministers of State (Deputy Minister)