An overview of the 2021 Tamil Nadu Assembly election results.

The DMK alliance swept the northern and delta regions and also performed well in the south, while the AIADMK managed to retain seats in its stronghold of western Tamil Nadu with considerable success.

Constituency-wise results of 2016 and 2021 Assembly elections

Tamil Nadu Assembly polls | Where the sun rose and leaves faded

Constituency-wise map of Tamil Nadu showing the seat share in 2016 Assembly elections.
 

 

Constituency-wise map of Tamil Nadu showing the seat share in 2021 Assembly elections.

Constituency-wise map of Tamil Nadu showing the seat share in 2021 Assembly elections.
 

 

Tamil Nadu seat share

 

Poor representation of women

This year saw the lowest representation of women since since 2001.

While 376 women were in the fray, 12 have been elected.

6 from DMK

3 from AIADMK

2 from BJP

1 from Congress

 

The table shows the performance of key parties in 2016 and 2021

Party

Contested

(2021)

Won

(2021)

Total Vote Share (%)

(2021)

Contested Vote Share (%)

(2021)

Contested

(2016)

Won

(2016)

Total Vote Share (%)

(2016)

Contested Vote Share (%)

(2016)

Dravida Munnetra Kazhagam 188 133 37.7 46.45 180 89 31.64 41.35
All India Anna Dravida Munnetra Kazhagam 191 66 33.29 40.48 234 136 40.77 40.77
Indian National Congress 25 18 4.27 41.36 41 8 6.42 36.74
Pattali Makkal Katchi 23 5 3.8 37.61 232 0 5.32 5.41
Bharatiya Janata Party 20 4 2.62 34.26 188 0 2.84 3.57
Viduthalai Chiruthaigal Katchi 6 4 0.99 42.44 25 0 0.77 6.98
Communist Party of India (Marxist) 6 2 0.85 35.17 25 0 0.71 6.8
Communist Party of India 6 2 1.09 43.28 25 0 0.79 7.25
Naam Tamilar Katchi 234 0 6.58 6.58 231 0 1.06 1.08
Makkal Needhi Maiam 180 0 2.62 3.43    
Amma Makkal Munnettra Kazagam 165 0 2.35 3.33    
Desiya Murpokku Dravida Kazhagam 60 0 0.43 1.68 104 0 2.39 5.42

 

The table shows the constituencies that flipped and the ones that were retained by both the major alliances

 

Flips No of Constituencies
  Delta North South West Total
Retained by AIADMK+ 3 7 12 33 55
Flipped from DMK+ to AIADMK+ 1 5 6 8 20
Retained by DMK+ 15 39 20 4 78
Flipped from AIADMK+ to DMK+ 22 27 20 12 81
Total 41 78 58 57 234

 

District-wise breakdown of winners

North

CuddaloreKallakurichiVillupuramTiruvannamalaiTirupathurVelloreRanipetKancheepuramChengalpattuChennaiThiruvallur9915154433224433664433551111001111000000000011000022000000000000001100000000000000000000000000000000000000000000000011001111112222112200000000000000000000000000000000000000110000

 

South

KanniyakumariTirunelveliTenkasiThoothukkudiRamanathapuramVirdhunagarTheniMaduraiSivagangaDindigul4422553355334422221100110000111111111133000000000000000000000000000000000000000000000000000000000000331155111100112211110000000000000000111100000000000000000000

 

Delta

PudukkottaiThanjavurThiruvarurNagapattinamAriyalurPerambalurTiruchirappalliKarur44992222222277330000000011000011000000001100000000000000110000110000000000110000000000001111111100000000000000000000000000000000

 

West

CoimbatoreThe NilgirisTiruppurErodeNamakkalSalemDharmapuriKrishnagiri22001144223311000000000011001100000000000000000000000000000000001100000000000000333388224455119900000000110000110022220000000000

 

 

Margins widen

The victory margins widened in the 2021 election compared to 2016

< 1000 8 16
1000 to 5000 31 37
5000 to 10000 30 44
10000 to 20000 51 74
20000 to 50000 89 59
> 50000 25 3

 

25,151 average winning margin for parties in DMK alliance in 2021.

18,044 average winning margin for parties in AIADMK alliance.

I. Periyasamy of DMK won Athoor with the widest margin of 1,35,571 votes.

J. Karunanithi of DMK won T. Nagar with the narrowest margin of 137 votes.



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