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{{Short description|Overview of the procedure of elections in the Indian state of Tamil Nadu}}
{{Politics of Tamil Nadu}}
{{Use dmy dates|date=February 2023}}
{{Use Indian English|date=February 2023}}
[[Tamil Nadu]] has a [[parliamentary system]] as defined by its [[Constitution of India|constitution]], with power distributed between the [[Government of Tamil Nadu|state government]] and the [[List of districts of Tamil Nadu|districts]].

The [[Governor of Tamil Nadu]] is the ceremonial head of the state. However, it is the [[Chief Minister of Tamil Nadu]] who is the leader of the party or political alliance having a majority in the state elections to the [[Tamil Nadu Legislative Assembly]]. The chief minister is the leader of the executive branch of the government of Tamil Nadu. The chief minister is the chief adviser to the governor of Tamil Nadu and the head of the [[Tamil Nadu Council of Ministers|state council of ministers]].

Elections in Tamil Nadu are conducted every five years to elect [[Member of the Legislative Assembly (India)|members]] to the Tamil Nadu Legislative Assembly and [[Member of Parliament (India)|members of parliament]] to the [[Lok Sabha]]. There are [[List of constituencies of the Tamil Nadu Legislative Assembly|234 assembly constituencies]] and [[List of constituencies of the Lok Sabha#Tamil Nadu (39)|39 Lok Sabha constituencies]]. The state has conducted 16 assembly elections and 17 Lok Sabha elections since independence.

==Elections==
The [[Tamil Nadu State Election Commission]] is the federal body of Tamil Nadu that is enacted under the provisions of the Constitution and is responsible for monitoring and administering all the electoral processes in Tamil Nadu. This body is responsible for ensuring elections are free and fair, without any bias.

Elections ensure the conduct of members pre-elections, during elections, and post-elections is as per statutory legislation.

All election-related disputes are handled by the Election Commission. The [[Madras High Court]] has held that where the enacted laws are silent or make insufficient provisions to deal with a given situation in the conduct of elections, the Election Commission has the residuary powers under the Constitution to act as appropriate.

==Types of elections==
Elections in Tamil Nadu include elections for:
*[[Member of Parliament, Rajya Sabha|Members of Parliament]] in the [[Rajya Sabha]] (Upper House)
*[[Member of Parliament, Lok Sabha|Members of Parliament]] in the [[Lok Sabha]] (Lower House)
*[[Member of the Legislative Assembly (India)|Members]] of the [[Tamil Nadu Legislative Assembly]]
*Members of [[Local government in Tamil Nadu|local governance bodies]] ([[List of municipal corporations in Tamil Nadu|municipal bodies]] and [[Panchayati raj|panchayats]])
*A by-election is held when the seatholder of a particular constituent dies, resigns, or is disqualified.

==Rajya Sabha elections==
[[Member of Parliament (India)|Members of parliament]] in the [[Rajya Sabha]] (House of the State) from [[Tamil Nadu]] are not directly elected by being voted upon by all adult citizens of the state but by the [[Member of the Legislative Assembly (India)|members]] of the [[Tamil Nadu Legislative Assembly]]. Candidates who win the Rajya Sabha elections are called "[[Member of Parliament, Rajya Sabha|Members of Parliament]]" and hold their seats for six years. The house meets in the Rajya Sabha Chamber of the [[Parliament House, New Delhi|Sansad Bhavan]] in [[New Delhi]] on matters relating to the creation of new laws or removing or improving the existing laws that affect all citizens of India. Elections take place to elect 18 members from Tamil Nadu.<ref>{{cite web|url=https://www.ndtv.com/india-news/rajya-sabha-election-2017-here-is-how-members-are-elected-to-upper-house-1734558|title=Rajya Sabha Election 2017: Here Is How Members Are Elected To Upper House|website=NDTV.com|access-date=5 April 2021}}</ref>

==Lok Sabha elections==
[[Member of Parliament (India)|Members of parliament]] in the [[Lok Sabha]] (House of the People) from [[Tamil Nadu]] are directly elected by being voted upon by all adult citizens of the state from a set of candidates who stand in their respective constituencies. Every adult citizen of Tamil Nadu can vote only in their constituency. Candidates who win the Lok Sabha elections are called "[[Member of Parliament, Lok Sabha|Members of Parliament]]" and hold their seats for five years or until the body is dissolved by the [[president of India]] on the advice of the [[Union Council of Ministers|council of ministers]]. The house meets in the Lok Sabha Chamber of the [[Parliament House, New Delhi|Sansad Bhavan]] in [[New Delhi]] on matters relating to the creation of new laws or removing or improving the existing laws that affect all citizens of India. Elections take place once every five years to elect 39 members from Tamil Nadu.<ref>{{cite web|url=https://eci.gov.in/elections/term-of-houses/|title=Terms of the Houses|publisher=Election Commission of India |access-date=5 April 2021}}</ref>
{|class="wikitable"
|-
{{Scrolling table/mid}}
|+style="text-align:left;"|Lok Sabha election results
|[[File:1977 tamil nadu lok sabha election map.png|center|thumb|[[6th Lok Sabha]] ([[1977 Indian general election in Tamil Nadu|1977]])]]
|[[File:1980 tamil nadu lok sabha election map.png|center|thumb|[[7th Lok Sabha]] ([[1980 Indian general election in Tamil Nadu|1980]])]]
|[[File:1984 tamil nadu lok sabha election map.png|center|thumb|[[8th Lok Sabha]] ([[1984 Indian general election in Tamil Nadu|1984]])]]
|[[File:1989 tamil nadu lok sabha election map.png|center|thumb|[[9th Lok Sabha]] ([[1989 Indian general election in Tamil Nadu|1989]])]]
|[[File:1991 tamil nadu lok sabha election map.png|center|thumb|[[10th Lok Sabha]] ([[1991 Indian general election in Tamil Nadu|1991]])]]
|[[File:1996 tamil nadu lok sabha election map.png|center|thumb|[[11th Lok Sabha]] ([[1996 Indian general election in Tamil Nadu|1996]])]]
|[[File:1998 tamil nadu lok sabha election map.png|center|thumb|[[12th Lok Sabha]] ([[1998 Indian general election in Tamil Nadu|1998]])]]
|[[File:1999 tamil nadu lok sabha election map.png|center|thumb|[[13th Lok Sabha]] ([[1999 Indian general election in Tamil Nadu|1999]])]]
|[[File:2004 tamil nadu lok sabha election map.png|center|thumb|[[14th Lok Sabha]] ([[2004 Indian general election in Tamil Nadu|2004]])]]
|[[File:2009 tamil nadu lok sabha election map.png|center|thumb|212px|[[15th Lok Sabha]] ([[2009 Indian general election in Tamil Nadu|2009]])]]
|[[File:2014 Tamil Nadu Lok Sabha result by constituency.PNG|center|thumb|216px|[[16th Lok Sabha]] ([[2014 Indian general election in Tamil Nadu|2014]])]]
|[[File:2019 Tamil Nadu Lok Sabha result by constituency.svg|center|thumb|273px|[[17th Lok Sabha]] ([[2019 Indian general election in Tamil Nadu|2019]])]]
{{Scrolling table/end}}

===History of Lok Sabha elections===
{|class="toccolours" style="width:75em"
!Colour key for parties
|-
|{{div col|colwidth=23em}}
{{legend|{{party color|All India Anna Dravida Munnetra Kazhagam}}|[[All India Anna Dravida Munnetra Kazhagam]]|outline=#000000}}
{{legend|{{party color|Bharatiya Janata Party}}|[[Bharatiya Janata Party]]|outline=#000000}}
{{legend|{{party color|Communist Party of India}}|[[Communist Party of India]]|outline=#000000}}
{{legend|{{party color|Communist Party of India (Marxist)}}|[[Communist Party of India (Marxist)]]|outline=#000000}}
{{legend|{{party color|Dravida Munnetra Kazhagam}}|[[Dravida Munnetra Kazhagam]]|outline=#000000}}
{{legend|{{party color|Independent politician}}|[[Independent politician|Independent]]|outline=#000000}}
{{legend|{{party color|Indian National Congress}}|[[Indian National Congress]]|outline=#000000}}
{{legend|{{party color|Indian National Congress (Indira)}}|[[Indian National Congress (Indira)]]|outline=#000000}}
{{legend|{{party color|Indian National Congress (Organisation)}}|[[Indian National Congress (Organisation)]]|outline=#000000}}
{{legend|{{party color|Pattali Makkal Katchi}}|[[Pattali Makkal Katchi]]|outline=#000000}}
{{legend|{{party color|Swatantra Party}}|[[Swatantra Party]]|outline=#000000}}
{{legend|{{party color|Tamil Maanila Congress (Moopanar)}}|[[Tamil Maanila Congress (Moopanar)]]|outline=#000000}}
{{div col end}}
|}

{|class="wikitable" style="text-align:center;"
!colspan=14|'''[[Lok Sabha|LOK SABHA]] ELECTIONS'''
|-
!rowspan=2|Lok Sabha {{small|(Election)}}
!rowspan=2|Total Seats
!colspan=4|First
!colspan=4|Second
!colspan=4|Third
|-
!colspan=2|Political party
!Seats
!Percentage of votes
!colspan=2|Political party
!Seats
!Percentage of votes
!colspan=2|Political party
!Seats
!Percentage of votes
|-
|[[1st Lok Sabha|1st]] {{small|([[1951 Indian general election in Madras|1951]])}}
|75
|[[Indian National Congress]]
|rowspan=3 style="background:{{party color|Indian National Congress}};"|
|35
|36.39%
|[[Independent politician|Independent]]
|rowspan=2 style="background:{{party color|Independent politician}};"|
|15
|23.15%
|[[Communist Party of India]]
|rowspan=3 style="background:{{party color|Communist Party of India}};"|
|8
|8.95%
|-
|[[2nd Lok Sabha|2nd]] {{small|([[1957 Indian general election in Madras|1957]])}}
|41
|[[Indian National Congress]]
|31
|46.52%
|[[Independent politician|Independent]]
|8
|39.77%
|[[Communist Party of India]]
|2
|10.06%
|-
|[[3rd Lok Sabha|3rd]] {{small|([[1962 Indian general election in Madras|1962]])}}
|41
|[[Indian National Congress]]
|31
|45.26%
|[[Dravida Munnetra Kazhagam]]
|style="background:{{party color|Dravida Munnetra Kazhagam}};"|
|7
|18.64%
|[[Communist Party of India]]
|2
|10.24%
|-
|[[4th Lok Sabha|4th]] {{small|([[1967 Indian general election in Madras|1967]])}}
|39
|[[Dravida Munnetra Kazhagam]]
|rowspan=2 style="background:{{party color|Dravida Munnetra Kazhagam}};"|
|25
|35.78%
|[[Swatantra Party]]
|style="background:{{party color|Swatantra Party}};"|
|6
|9.16%
|[[Communist Party of India (Marxist)]]
|style="background:{{party color|Communist Party of India (Marxist)}};"|
|4
|6.85%
|-
|[[5th Lok Sabha|5th]] {{small|([[1971 Indian general election in Tamil Nadu|1971]])}}
|39
|[[Dravida Munnetra Kazhagam]]
|23
|35.25%
|[[Indian National Congress]]
|rowspan=2 style="background:{{party color|Indian National Congress}};"|
|9
|12.51%
|[[Communist Party of India]]
|style="background:{{party color|Communist Party of India}};"|
|4
|5.43%
|-
|[[6th Lok Sabha|6th]] {{small|([[1977 Indian general election in Tamil Nadu|1977]])}}
|39
|[[All India Anna Dravida Munnetra Kazhagam]]
|style="background:{{party color|All India Anna Dravida Munnetra Kazhagam}};"|
|17
|30.04%
|[[Indian National Congress]]
|14
|22.27%
|[[Indian National Congress (Organisation)]]
|style="background:{{party color|Indian National Congress (Organisation)}};"|
|3
|17.67%
|-
|[[7th Lok Sabha|7th]] {{small|([[1980 Indian general election in Tamil Nadu|1980]])}}
|39
|[[Indian National Congress (Indira)]]
|style="background:{{party color|Indian National Congress (Indira)}};"|
|20
|31.62%
|[[Dravida Munnetra Kazhagam]]
|style="background:{{party color|Dravida Munnetra Kazhagam}};"|
|16
|23.01%
|[[All India Anna Dravida Munnetra Kazhagam]]
|style="background:{{party color|All India Anna Dravida Munnetra Kazhagam}};"|
|2
|25.38%
|-
|[[8th Lok Sabha|8th]] {{small|([[1984 Indian general election in Tamil Nadu|1984]])}}
|39
|[[Indian National Congress]]
|rowspan=3 style="background:{{party color|Indian National Congress}};"|
|25
|40.51%
|[[All India Anna Dravida Munnetra Kazhagam]]
|rowspan=3 style="background:{{party color|All India Anna Dravida Munnetra Kazhagam}};"|
|12
|18.36%
|[[Dravida Munnetra Kazhagam]]
|style="background:{{party color|Dravida Munnetra Kazhagam}};"|
|2
|25.90%
|-
|[[9th Lok Sabha|9th]] {{small|([[1989 Indian general election in Tamil Nadu|1989]])}}
|39
|[[Indian National Congress]]
|27
|39.86%
|[[All India Anna Dravida Munnetra Kazhagam]]
|11
|17.12%
|[[Communist Party of India]]
|style="background:{{party color|Communist Party of India}};"|
|1
|2.04%
|-
|[[10th Lok Sabha|10th]] {{small|([[1991 Indian general election in Tamil Nadu|1991]])}}
|39
|[[Indian National Congress]]
|28
|42.57%
|[[All India Anna Dravida Munnetra Kazhagam]]
|11
|18.10%
|''Vacant''
|style="background:white;"|
|–
|–
|-
|[[11th Lok Sabha|11th]] {{small|([[1996 Indian general election in Tamil Nadu|1996]])}}
|39
|[[Tamil Maanila Congress (Moopanar)]]
|style="background:{{party color|Tamil Maanila Congress (Moopanar)}};"|
|20
|27.00%
|[[Dravida Munnetra Kazhagam]]
|rowspan=2 style="background:{{party color|Dravida Munnetra Kazhagam}};"|
|17
|25.63%
|[[Communist Party of India]]
|style="background:{{party color|Communist Party of India}};"|
|2
|2.33%
|-
|[[12th Lok Sabha|12th]] {{small|([[1998 Indian general election in Tamil Nadu|1998]])}}
|39
|[[All India Anna Dravida Munnetra Kazhagam]]
|style="background:{{party color|All India Anna Dravida Munnetra Kazhagam}};"|
|18
|25.89%
|[[Dravida Munnetra Kazhagam]]
|5
|20.08%
|[[Pattali Makkal Katchi]]
|rowspan=3 style="background:{{party color|Pattali Makkal Katchi}};"|
|4
|6.05%
|-
|[[13th Lok Sabha|13th]] {{small|([[1999 Indian general election in Tamil Nadu|1999]])}}
|39
|[[Dravida Munnetra Kazhagam]]
|rowspan=3 style="background:{{party color|Dravida Munnetra Kazhagam}};"|
|12
|23.13%
|[[All India Anna Dravida Munnetra Kazhagam]]
|style="background:{{party color|All India Anna Dravida Munnetra Kazhagam}};"|
|10
|25.68%
|[[Pattali Makkal Katchi]]
|5
|8.21%
|-
|[[14th Lok Sabha|14th]] {{small|([[2004 Indian general election in Tamil Nadu|2004]])}}
|39
|[[Dravida Munnetra Kazhagam]]
|16
|24.60%
|[[Indian National Congress]]
|style="background:{{party color|Indian National Congress}};"|
|10
|14.40%
|[[Pattali Makkal Katchi]]
|5
|6.71%
|-
|[[15th Lok Sabha|15th]] {{small|([[2009 Indian general election in Tamil Nadu|2009]])}}
|39
|[[Dravida Munnetra Kazhagam]]
|18
|25.09%
|[[All India Anna Dravida Munnetra Kazhagam]]
|style="background:{{party color|All India Anna Dravida Munnetra Kazhagam}};"|
|9
|22.88%
|[[Indian National Congress]]
|style="background:{{party color|Indian National Congress}};"|
|8
|15.03%
|-
|[[16th Lok Sabha|16th]] {{small|([[2014 Indian general election in Tamil Nadu|2014]])}}
|39
|[[All India Anna Dravida Munnetra Kazhagam]]
|style="background:{{party color|All India Anna Dravida Munnetra Kazhagam}};"|
|37
|44.92%
|[[Bharatiya Janata Party]]
|style="background:{{party color|Bharatiya Janata Party}};"|
|1
|5.56%
|[[Pattali Makkal Katchi]]
|style="background:{{party color|Pattali Makkal Katchi}};"|
|1
|4.49%
|-
|[[17th Lok Sabha|17th]] {{small|([[2019 Indian general election in Tamil Nadu|2019]])}}
|39
|[[Dravida Munnetra Kazhagam]]
|style="background:{{party color|Dravida Munnetra Kazhagam}};"|
|24
|33.52%
|[[Indian National Congress]]
|style="background:{{party color|Indian National Congress}};"|
|8
|12.62%
|[[Communist Party of India]]
|style="background:{{party color|Communist Party of India}};"|
|2
|2.40%
|}

==Legislative Assembly elections==
[[Member of Legislative Assembly (India)|Members]] of the [[Tamil Nadu Legislative Assembly]] are directly elected by being voted upon by all adult citizens of the state from a set of candidates who stand in their respective constituencies. Every adult citizen of [[Tamil Nadu]] can vote only in their constituency. Candidates who win the legislative assembly elections are called "Members of the Legislative Assembly" and hold their seats for five years or until the body is dissolved by the [[governor of Tamil Nadu]] on the advice of the [[Tamil Nadu Council of Ministers|council of ministers]]. The house meets in the Assembly Chamber of the [[Fort St. George, India|Chief Secretariat]] in [[Chennai]] on matters relating to the creation of new laws or removing or improving the existing laws that affect all citizens of Tamil Nadu. Elections take place once every five years to elect 234 members to the legislative assembly. The leader of the majority party or alliance takes oath as [[chief minister of Tamil Nadu]].
{|class="wikitable"
|-
{{Scrolling table/mid}}
|+style="text-align:left;"|Legislative Assembly election results
|[[File:1977 tamil nadu legislative election map.png|center|thumb|6th Assembly ([[1977 Tamil Nadu Legislative Assembly election|1977]])]]
|[[File:1980 tamil nadu legislative election map.png|center|thumb|7th Assembly ([[1980 Tamil Nadu Legislative Assembly election|1980]])]]
|[[File:1984 tamil nadu legislative election map.png|center|thumb|8th Assembly ([[1984 Tamil Nadu Legislative Assembly election|1984]])]]
|[[File:1989 tamil nadu legislative election map.png|center|thumb|9th Assembly ([[1989 Tamil Nadu Legislative Assembly election|1989]])]]
|[[File:1991 tamil nadu legislative election map.png|center|thumb|10th Assembly ([[1991 Tamil Nadu Legislative Assembly election|1991]])]]
|[[File:1996 tamil nadu legislative election map.png|center|thumb|11th Assembly ([[1996 Tamil Nadu Legislative Assembly election|1996]])]]
|[[File:2001 tamil nadu legislative election map.png|center|thumb|[[12th Tamil Nadu Assembly|12th Assembly]] ([[2001 Tamil Nadu Legislative Assembly election|2001]])]]
|[[File:2006 tamil nadu legislative election map.jpg|center|thumb|[[13th Tamil Nadu Assembly|13th Assembly]] ([[2006 Tamil Nadu Legislative Assembly election|2006]])]]
|[[File:2011 Tamil Nadu Legislative Election Map by Parties.svg|center|thumb|245px|[[14th Tamil Nadu Assembly|14th Assembly]] ([[2011 Tamil Nadu Legislative Assembly election|2011]])]]
|[[File:Tamil Nadu assembly election 2016 results.png|center|thumb|305px|[[15th Tamil Nadu Assembly|15th Assembly]] ([[2016 Tamil Nadu Legislative Assembly election|2016]])]]
|[[File:2021 Tamil Nadu Legislative Assembly election result.png|center|thumb|300px|[[16th Tamil Nadu Assembly|16th Assembly]] ([[2021 Tamil Nadu Legislative Assembly election|2021]])]]
{{Scrolling table/end}}

===History of Legislative Assembly elections===
{|class="toccolours" style="width:75em"
!Colour key for parties
|-
|{{div col|colwidth=23em}}
{{legend|{{party color|All India Anna Dravida Munnetra Kazhagam}}|[[All India Anna Dravida Munnetra Kazhagam]]|outline=#000000}}
{{legend|{{party color|Communist Party of India}}|[[Communist Party of India]]|outline=#000000}}
{{legend|{{party color|Desiya Murpokku Dravida Kazhagam}}|[[Desiya Murpokku Dravida Kazhagam]]|outline=#000000}}
{{legend|{{party color|Dravida Munnetra Kazhagam}}|[[Dravida Munnetra Kazhagam]]|outline=#000000}}
{{legend|{{party color|Independent politician}}|[[Independent politician|Independent]]|outline=#000000}}
{{legend|{{party color|Indian National Congress}}|[[Indian National Congress]]|outline=#000000}}
{{legend|{{party color|Indian National Congress (Indira)}}|[[Indian National Congress (Indira)]]|outline=#000000}}
{{legend|{{party color|Indian National Congress (Organisation)}}|[[Indian National Congress (Organisation)]]|outline=#000000}}
{{legend|{{party color|Swatantra Party}}|[[Swatantra Party]]|outline=#000000}}
{{legend|{{party color|Tamil Maanila Congress (Moopanar)}}|[[Tamil Maanila Congress (Moopanar)]]|outline=#000000}}
{{div col end}}
|}

{|class="wikitable" style="text-align:center;"
!colspan=14|'''[[Tamil Nadu Legislative Assembly|LEGISLATIVE ASSEMBLY]] ELECTIONS'''
|-
!rowspan=2|Assembly {{small|(Election)}}
!rowspan=2|Total Seats
!colspan=4|First
!colspan=4|Second
!colspan=4|Third
|-
!colspan=2|Political party
!Seats
!Percentage of votes
!colspan=2|Political party
!Seats
!Percentage of votes
!colspan=2|Political party
!Seats
!Percentage of votes
|-
|[[1st Madras Assembly|1st]] {{small|([[1952 Madras Legislative Assembly election|1952]])}}
|375
|[[Indian National Congress]]
|rowspan=3 style="background:{{party color|Indian National Congress}};"|
|152
|34.88%
|[[Communist Party of India]]
|style="background:{{party color|Communist Party of India}};"|
|62
|13.18%
|[[Independent politician|Independent]]
|style="background:{{party color|Independent politician}};"|
|62
|23.75%
|-
|[[2nd Madras Assembly|2nd]] {{small|([[1957 Madras Legislative Assembly election|1957]])}}
|205
|[[Indian National Congress]]
|151
|45.34%
|[[Independent politician|Independent]]
|style="background:{{party color|Independent politician}};"|
|48
|44.62%
|[[Communist Party of India]]
|style="background:{{party color|Communist Party of India}};"|
|4
|7.40%
|-
|[[3rd Madras Assembly|3rd]] {{small|([[1962 Madras Legislative Assembly election|1962]])}}
|206
|[[Indian National Congress]]
|139
|46.14%
|[[Dravida Munnetra Kazhagam]]
|style="background:{{party color|Dravida Munnetra Kazhagam}};"|
|50
|27.10%
|[[Swatantra Party]]
|rowspan=2 style="background:{{party color|Swatantra Party}};"|
|6
|7.82%
|-
|[[4th Madras Assembly|4th]] {{small|([[1967 Madras Legislative Assembly election|1967]])}}
|234
|[[Dravida Munnetra Kazhagam]]
|rowspan=2 style="background:{{party color|Dravida Munnetra Kazhagam}};"|
|137
|40.69%
|[[Indian National Congress]]
|style="background:{{party color|Indian National Congress}};"|
|51
|41.10%
|[[Swatantra Party]]
|20
|5.30%
|-
|5th {{small|([[1971 Tamil Nadu Legislative Assembly election|1971]])}}
|234
|[[Dravida Munnetra Kazhagam]]
|184
|48.58%
|[[Indian National Congress (Organisation)]]
|style="background:{{party color|Indian National Congress (Organisation)}};"|
|15
|34.99%
|[[Communist Party of India]]
|style="background:{{party color|Communist Party of India}};"|
|8
|2.32%
|-
|6th {{small|([[1977 Tamil Nadu Legislative Assembly election|1977]])}}
|234
|[[All India Anna Dravida Munnetra Kazhagam]]
|rowspan=3 style="background:{{party color|All India Anna Dravida Munnetra Kazhagam}};"|
|130
|30.36%
|[[Dravida Munnetra Kazhagam]]
|rowspan=2 style="background:{{party color|Dravida Munnetra Kazhagam}};"|
|48
|24.89%
|[[Indian National Congress]]
|style="background:{{party color|Indian National Congress}};"|
|27
|17.50%
|-
|7th {{small|([[1980 Tamil Nadu Legislative Assembly election|1980]])}}
|234
|[[All India Anna Dravida Munnetra Kazhagam]]
|129
|38.75%
|[[Dravida Munnetra Kazhagam]]
|37
|22.10%
|[[Indian National Congress (Indira)]]
|style="background:{{party color|Indian National Congress (Indira)}};"|
|31
|20.92%
|-
|8th {{small|([[1984 Tamil Nadu Legislative Assembly election|1984]])}}
|234
|[[All India Anna Dravida Munnetra Kazhagam]]
|132
|37.03%
|[[Indian National Congress]]
|style="background:{{party color|Indian National Congress}};"|
|61
|16.28%
|[[Dravida Munnetra Kazhagam]]
|style="background:{{party color|Dravida Munnetra Kazhagam}};"|
|24
|29.34%
|-
|9th {{small|([[1989 Tamil Nadu Legislative Assembly election|1989]])}}
|234
|[[Dravida Munnetra Kazhagam]]
|style="background:{{party color|Dravida Munnetra Kazhagam}};"|
|150
|33.18%
|[[All India Anna Dravida Munnetra Kazhagam]]
|style="background:{{party color|All India Anna Dravida Munnetra Kazhagam}};"|
|29
|21.77%
|[[Indian National Congress]]
|style="background:{{party color|Indian National Congress}};"|
|26
|19.83%
|-
|10th {{small|([[1991 Tamil Nadu Legislative Assembly election|1991]])}}
|234
|[[All India Anna Dravida Munnetra Kazhagam]]
|style="background:{{party color|All India Anna Dravida Munnetra Kazhagam}};"|
|164
|44.39%
|[[Indian National Congress]]
|style="background:{{party color|Indian National Congress}};"|
|60
|15.19%
|[[Dravida Munnetra Kazhagam]]
|style="background:{{party color|Dravida Munnetra Kazhagam}};"|
|2
|22.46%
|-
|11th {{small|([[1996 Tamil Nadu Legislative Assembly election|1996]])}}
|234
|[[Dravida Munnetra Kazhagam]]
|style="background:{{party color|Dravida Munnetra Kazhagam}};"|
|173
|42.07%
|[[Tamil Maanila Congress (Moopanar)]]
|style="background:{{party color|Tamil Maanila Congress (Moopanar)}};"|
|39
|9.30%
|[[Communist Party of India]]
|style="background:{{party color|Communist Party of India}};"|
|8
|2.12%
|-
|[[12th Tamil Nadu Assembly|12th]] {{small|([[2001 Tamil Nadu Legislative Assembly election|2001]])}}
|234
|[[All India Anna Dravida Munnetra Kazhagam]]
|style="background:{{party color|All India Anna Dravida Munnetra Kazhagam}};"|
|132
|31.44%
|[[Dravida Munnetra Kazhagam]]
|style="background:{{party color|Dravida Munnetra Kazhagam}};"|
|31
|30.92%
|[[Tamil Maanila Congress (Moopanar)]]
|style="background:{{party color|Tamil Maanila Congress (Moopanar)}};"|
|23
|6.73%
|-
|[[13th Tamil Nadu Assembly|13th]] {{small|([[2006 Tamil Nadu Legislative Assembly election|2006]])}}
|234
|[[Dravida Munnetra Kazhagam]]
|style="background:{{party color|Dravida Munnetra Kazhagam}};"|
|96
|26.46%
|[[All India Anna Dravida Munnetra Kazhagam]]
|style="background:{{party color|All India Anna Dravida Munnetra Kazhagam}};"|
|61
|32.64%
|[[Indian National Congress]]
|style="background:{{party color|Indian National Congress}};"|
|34
|8.38%
|-
|[[14th Tamil Nadu Assembly|14th]] {{small|([[2011 Tamil Nadu Legislative Assembly election|2011]])}}
|234
|[[All India Anna Dravida Munnetra Kazhagam]]
|rowspan=2 style="background:{{party color|All India Anna Dravida Munnetra Kazhagam}};"|
|150
|38.40%
|[[Desiya Murpokku Dravida Kazhagam]]
|style="background:{{party color|Desiya Murpokku Dravida Kazhagam}};"|
|29
|7.88%
|[[Dravida Munnetra Kazhagam]]
|style="background:{{party color|Dravida Munnetra Kazhagam}};"|
|23
|22.39%
|-
|[[15th Tamil Nadu Assembly|15th]] {{small|([[2016 Tamil Nadu Legislative Assembly election|2016]])}}
|234
|[[All India Anna Dravida Munnetra Kazhagam]]
|135
|40.77%
|[[Dravida Munnetra Kazhagam]]
|style="background:{{party color|Dravida Munnetra Kazhagam}};"|
|88
|31.64%
|[[Indian National Congress]]
|rowspan=2 style="background:{{party color|Indian National Congress}};"|
|8
|6.42%
|-
|[[16th Tamil Nadu Assembly|16th]] {{small|([[2021 Tamil Nadu Legislative Assembly election|2021]])}}
|234
|[[Dravida Munnetra Kazhagam]]
|style="background:{{party color|Dravida Munnetra Kazhagam}};"|
|133
|37.70%
|[[All India Anna Dravida Munnetra Kazhagam]]
|style="background:{{party color|All India Anna Dravida Munnetra Kazhagam}};"|
|66
|33.29%
|[[Indian National Congress]]
|18
|4.27%
|}

==By-election==
When an elected candidate to either the Rajya Sabha, Lok Sabha, or Tamil Nadu Legislative Assembly leaves the office vacant before their term ends, a by-election is conducted to find a suitable replacement to fill the vacant position. It is often referred to as bypolls.

Common reasons for by-elections:
*Resignation of the sitting M.P. or an M.L.A.
*Death of the sitting M.P. or an M.L.A.

But other reasons occur when the incumbent is disqualified for being ineligible to continue in office (criminal conviction, failure to maintain a minimum level of attendance in the office due to election irregularities found later, or when a candidate wins more than one seat and has to vacate one).

==See also==
*[[Government of Tamil Nadu]]
*[[Local Body Election in Tamil Nadu]]

==Notes==
{{notelist}}

==References==
{{Reflist}}

==External links==
*[https://web.archive.org/web/20161203074253/http://www.survey2016.in/ Tamilnadu Election Polls 2016]
*[https://web.archive.org/web/20081218010942/http://www.eci.gov.in/StatisticalReports/ElectionStatistics.asp Election Commission of India]
*[http://www.assembly.tn.gov.in/ Tamil Nadu Legislative Assembly]
*[https://archive.today/20121208164546/http://www.indian-elections.com/assembly-elections/tamil-nadu/election-result-06.html Indian Elections]
*[http://election.dinakaran.com Tamil Nadu Assembly Election 2011]

{{Tamil Nadu assembly elections|state=collapsed}}
{{Indian elections}}
{{Assembly constituencies of Tamil Nadu|state=collapsed}}

[[Category:Elections in Tamil Nadu]]

Elections in Tamil Nadu - Revision history

WikiDwarf at 18:29, 25 September 2023