# Chennai South Lok Sabha constituency

The Lok Sabha constituency Chennai South is one of three constituencies in Chennai, Tamil Nadu. Its Tamil Nadu Parliamentary Constituency number is 3 of 39. It was formerly known as Madras South. It was created in 1957 through bifurcation of Madras Lok Sabha constituency. It is one of the most populous parliamentary constituencies in South India.

## Assembly segments
### After 2009

After delimitation, Chennai South consists of following constituencies
| # | Name | District | Member | Party |
| 22 | Virugampakkam | Chennai | A. M. V. Prabhakara Raja | DMK |
| 23 | Saidapet | Chennai | Ma. Subramanian | DMK |
| 24 | Thiyagarayanagar | Chennai | J. Karunanithi | DMK |
| 25 | Mylapore | Chennai | Dha. Velu | DMK |
| 26 | Velachery | Chennai | J. M. H. Aassan Maulaana | INC |
| 27 | Shozhinganallur | Chennai | S. Aravind Ramesh | DMK |

### Before 2009

Chennai South Lok Sabha constituency is composed of the following assembly segments:
* Triplicane (defunct)
* Mylapore
* Saidapet
* Alandur (moved to Sriperumpudhur)
* Tambaram (moved to Sriperumpudhur)
* Thiyagarayanagar

## Members of the Parliament

| Year | Winner | Party |
| 1952 | T. T. Krishnamachari | Indian National Congress |
| 1957 | T. T. Krishnamachari | Indian National Congress |
| 1962 | Nanjil K. Manoharan | Dravida Munnetra Kazhagam |
| 1967 | C. N. Annadurai | Dravida Munnetra Kazhagam |
| 1967^ | Murasoli Maran | Dravida Munnetra Kazhagam |
| 1971 | Murasoli Maran | Dravida Munnetra Kazhagam |
| 1977 | R. Venkataraman | Indian National Congress |
| 1980 | R. Venkataraman | Indian National Congress |
| 1984 | Vyjayanthimala | Indian National Congress |
| 1989 | Vyjayanthimala | Indian National Congress |
| 1991 | R. Sridharan | All India Anna Dravida Munnetra Kazhagam |
| 1996 | T. R. Baalu | Dravida Munnetra Kazhagam |
| 1998 | T. R. Baalu | Dravida Munnetra Kazhagam |
| 1999 | T. R. Baalu | Dravida Munnetra Kazhagam |
| 2004 | T. R. Baalu | Dravida Munnetra Kazhagam |
| 2009 | C. Rajendran | All India Anna Dravida Munnetra Kazhagam |
| 2014 | J. Jayavardhan | All India Anna Dravida Munnetra Kazhagam |
| 2019 | Thamizhachi Thangapandian | Dravida Munnetra Kazhagam |
| 2024 | Thamizhachi Thangapandian | Dravida Munnetra Kazhagam |

## Election results

Vote share of Winning candidates :
| 2024 | 2024 | 47.09% | 47.09% |
| 2019 | 2019 | 50.28% | 50.28% |
| 2014 | 2014 | 41.34% | 41.34% |
| 2009 | 2009 | 42.38% | 42.38% |
| 2004 | 2004 | 60.41% | 60.41% |
| 1999 | 1999 | 60.03% | 60.03% |
| 1998 | 1998 | 48.17% | 48.17% |
| 1996 | 1996 | 61.97% | 61.97% |
| 1991 | 1991 | 56.66% | 56.66% |
| 1989 | 1989 | 53.91% | 53.91% |
| 1984 | 1984 | 51.92% | 51.92% |
| 1980 | 1980 | 60.34% | 60.34% |
| 1977 | 1977 | 50.79% | 50.79% |
| 1971 | 1971 | 52.09% | 52.09% |
| By-Election 1967 | By-Election 1967 | % | % |
| 1967 | 1967 | 59.38% | 59.38% |
| 1962 | 1962 | 44.73% | 44.73% |
| 1957 | 1957 | 45.93% | 45.93% |
| 1951 | 1951 | 40.66% | 40.66% |

### General Elections 2024

2024 Indian general election: Chennai South :
| Party | Party | Candidate | Votes | % | ±% |
| | DMK | Thamizhachi Thangapandian | 516,628 | 47.00 | 3.28 |
| | BJP | Tamilisai Soundararajan | 290,683 | 26.44 | New |
| | AIADMK | J. Jayavardhan | 172,491 | 15.69 | 11.25 |
| | NTK | S. Tamilselvi | 83,972 | 7.64 | 3.17 |
| | NOTA | None of the above | 15,653 | 1.42 | 0.08 |
| Margin of victory | Margin of victory | Margin of victory | 225,945 | 20.55 | 2.19 |
| Turnout | Turnout | Turnout | 1,100,005 | 54.36 | 2.46 |
| | DMK hold | DMK hold | Swing | | |

### General Elections 2019

2019 Indian general election: Chennai South :
| Party | Party | Candidate | Votes | % | ±% |
| | DMK | Thamizhachi Thangapandian | 564,872 | 50.28 | +21.84 |
| | AIADMK | Dr. J. Jayavardhan | 3,02,649 | 26.94 | −14.40 |
| | MNM | R. Rangarajan | 1,35,465 | 12.06 | |
| | NTK | A. J. Sherine | 50,222 | 4.47 | |
| | Independent | Dr. E. Subaya (A) Esakki Subaya | 29,522 | 2.63 | |
| | NOTA | None Of The Above | 16,891 | 1.50 | −0.42 |
| Margin of victory | Margin of victory | Margin of victory | 2,62,223 | 23.34 | +10.44 |
| Turnout | Turnout | Turnout | 11,23,410 | 56.92 | −1.61 |
| Registered electors | Registered electors | Registered electors | 19,73,533 | | 9.90 |
| | DMK gain from AIADMK | DMK gain from AIADMK | Swing | 8.94 | |

### General Elections 2014

2014 Indian general election: Chennai South :
| Party | Party | Candidate | Votes | % | ±% |
| | AIADMK | Dr. J. Jayavardhan | 434,540 | 41.34 | −1.04 |
| | DMK | T. K. S. Elangovan | 2,98,965 | 28.44 | −9.42 |
| | BJP | La. Ganesan | 2,58,262 | 24.57 | 18.67 |
| | INC | S. V. Ramani | 24,276 | 2.31 | |
| | NOTA | None Of The Above | 20,229 | 1.92 | |
| | AAP | V. S. Chandirakumar | 17,208 | 1.64 | |
| Margin of victory | Margin of victory | Margin of victory | 1,35,575 | 12.90 | 8.37 |
| Turnout | Turnout | Turnout | 10,51,180 | 58.54 | −4.12 |
| Registered electors | Registered electors | Registered electors | 17,95,776 | | 54.53 |
| | AIADMK hold | AIADMK hold | Swing | -1.04 | |

### General Elections 2009

2009 Indian general election: Chennai South :
| Party | Party | Candidate | Votes | % | ±% |
| | AIADMK | C. Rajendran | 308,567 | 42.38 | 5.59 |
| | DMK | R. S. Bharathy | 2,75,632 | 37.86 | −22.56 |
| | DMDK | V. Gopinath | 67,291 | 9.24 | |
| | BJP | La. Ganesan | 42,925 | 5.90 | |
| | Independent | E. Sarath Babu | 15,885 | 2.18 | |
| Margin of victory | Margin of victory | Margin of victory | 32,935 | 4.52 | −19.10 |
| Turnout | Turnout | Turnout | 11,62,062 | 62.66 | 14.73 |
| Rejected ballots | Rejected ballots | Rejected ballots | 16 | 0.00 | |
| Registered electors | Registered electors | Registered electors | 7,28,092 | | −40.40 |
| | AIADMK gain from DMK | AIADMK gain from DMK | Swing | -18.03 | |

### General Elections 2004

2004 Indian general election: Chennai South :
| Party | Party | Candidate | Votes | % | ±% |
| | DMK | T. R. Baalu | 564,578 | 60.41 | 0.38 |
| | AIADMK | Bader Sayeed | 3,43,838 | 36.79 | |
| Margin of victory | Margin of victory | Margin of victory | 2,20,740 | 23.62 | −2.03 |
| Turnout | Turnout | Turnout | 9,34,548 | 47.93 | 2.77 |
| Rejected ballots | Rejected ballots | Rejected ballots | 29 | 0.00 | |
| Registered electors | Registered electors | Registered electors | 19,49,904 | | −5.99 |
| | DMK hold | DMK hold | Swing | 0.38 | |

### General Elections 1999

1999 Indian general election: Chennai South :
| Party | Party | Candidate | Votes | % | ±% |
| | DMK | T. R. Baalu | 562,221 | 60.03 | −1.93 |
| | INC | V. Dhandayuthapani | 3,22,037 | 34.39 | |
| | TMC(M) | Muktha V. Srinivasan | 38,700 | 4.13 | |
| | Independent | M. Raja | 4,309 | 0.46 | |
| Margin of victory | Margin of victory | Margin of victory | 2,40,184 | 25.65 | −13.37 |
| Turnout | Turnout | Turnout | 9,36,522 | 45.15 | −11.13 |
| Registered electors | Registered electors | Registered electors | 20,74,130 | | 7.09 |
| | DMK hold | DMK hold | Swing | -1.93 | |

### General Elections 1998

1998 Indian general election: Chennai South :
| Party | Party | Candidate | Votes | % | ±% |
| | DMK | T. R. Baalu | 432,913 | 48.17 | |
| | BJP | Jana Krishnamurthi | 4,12,899 | 45.94 | |
| | INC | M. P. Subramanyam | 44,549 | 4.96 | |
| Margin of victory | Margin of victory | Margin of victory | 20,014 | 2.23 | −36.79 |
| Turnout | Turnout | Turnout | 8,98,798 | 47.35 | −8.94 |
| Registered electors | Registered electors | Registered electors | 19,36,771 | | 23.14 |
| | DMK hold | DMK hold | Swing | -13.80 | |

### General Elections 1996

1996 Indian general election: Chennai South :
| Party | Party | Candidate | Votes | % | ±% |
| | DMK | T. R. Baalu | 538,697 | 61.97 | 27.31 |
| | AIADMK | H. Ganesham | 1,99,516 | 22.95 | −33.71 |
| | Independent | Asha Menon @ Revathi | 42,906 | 4.94 | |
| | BJP | V. Maitreyan | 34,356 | 3.95 | −0.04 |
| | MDMK | R. Senguttuvan | 29,838 | 3.43 | |
| | PMK | K. V. Sivaraman | 13,540 | 1.56 | |
| Margin of victory | Margin of victory | Margin of victory | 3,39,181 | 39.02 | 17.01 |
| Turnout | Turnout | Turnout | 8,69,334 | 56.28 | 3.10 |
| Registered electors | Registered electors | Registered electors | 15,72,764 | | 11.50 |
| | DMK gain from AIADMK | DMK gain from AIADMK | Swing | 5.30 | |

### General Elections 1991

1991 Indian general election: Chennai South :
| Party | Party | Candidate | Votes | % | ±% |
| | AIADMK | R. Sridharan | 418,493 | 56.66 | |
| | DMK | T. R. Baalu | 2,55,965 | 34.66 | −4.04 |
| | BJP | R. S. Narayanaswami | 29,480 | 3.99 | |
| | PMK | K. V. Sivaraman | 19,840 | 2.69 | |
| | JP | H. V. Hande | 7,662 | 1.04 | |
| Margin of victory | Margin of victory | Margin of victory | 1,62,528 | 22.01 | 6.79 |
| Turnout | Turnout | Turnout | 7,38,558 | 53.19 | −6.53 |
| Registered electors | Registered electors | Registered electors | 14,10,540 | | 0.91 |
| | AIADMK gain from INC | AIADMK gain from INC | Swing | 2.75 | |

### General Elections 1989

1989 Indian general election: Chennai South :
| Party | Party | Candidate | Votes | % | ±% |
| | INC | Vyjayanthimala | 445,864 | 53.91 | 1.99 |
| | DMK | Aladi Aruna | 3,20,020 | 38.70 | |
| | Independent | Ayilam Panchapakesa Venkateswaran | 24,967 | 3.02 | |
| | PMK | V. Sivaraman Alias Saidai K. V. Siva | 22,234 | 2.69 | |
| Margin of victory | Margin of victory | Margin of victory | 1,25,844 | 15.22 | 7.80 |
| Turnout | Turnout | Turnout | 8,27,014 | 59.72 | −6.12 |
| Registered electors | Registered electors | Registered electors | 13,97,773 | | 37.20 |
| | INC hold | INC hold | Swing | 1.99 | |

### General Elections 1984

1984 Indian general election: Chennai South :
| Party | Party | Candidate | Votes | % | ±% |
| | INC | Vyjayanthimala | 336,353 | 51.92 | |
| | JP | Era Sezhiyan | 2,88,336 | 44.51 | |
| | Independent | V. Kulothungacholan | 3,173 | 0.49 | |
| | Independent | M. Madhavan | 2,999 | 0.46 | |
| | Independent | Era Kulasekaran | 2,908 | 0.45 | |
| Margin of victory | Margin of victory | Margin of victory | 48,017 | 7.41 | −14.67 |
| Turnout | Turnout | Turnout | 6,47,851 | 65.84 | −2.25 |
| Registered electors | Registered electors | Registered electors | 10,18,795 | | 25.49 |
| | INC gain from INC(I) | INC gain from INC(I) | Swing | -8.42 | |

### General Elections 1980

1980 Indian general election: Chennai South :
| Party | Party | Candidate | Votes | % | ±% |
| | INC(I) | Ramaswamy Venkataraman | 328,836 | 60.34 | |
| | AIADMK | E. V. K. Sulochana Sampath | 2,08,474 | 38.25 | |
| Margin of victory | Margin of victory | Margin of victory | 1,20,362 | 22.09 | 18.96 |
| Turnout | Turnout | Turnout | 5,44,980 | 68.09 | 9.37 |
| Registered electors | Registered electors | Registered electors | 8,11,849 | | −0.86 |
| | INC(I) gain from INC | INC(I) gain from INC | Swing | 9.55 | |

### General Elections 1977

1977 Indian general election: Chennai South :
| Party | Party | Candidate | Votes | % | ±% |
| | INC | Ramaswamy Venkataraman | 241,033 | 50.79 | |
| | DMK | Murasoli Maran | 2,26,204 | 47.66 | −4.42 |
| | Independent | S. Srinivasan | 2,676 | 0.56 | |
| Margin of victory | Margin of victory | Margin of victory | 14,829 | 3.12 | −1.05 |
| Turnout | Turnout | Turnout | 4,74,577 | 58.72 | −8.60 |
| Registered electors | Registered electors | Registered electors | 8,18,878 | | 10.41 |
| | INC gain from DMK | INC gain from DMK | Swing | -1.30 | |

### General Elections 1971

1971 Indian general election: Chennai South :
| Party | Party | Candidate | Votes | % | ±% |
| | DMK | Murasoli Maran | 253,626 | 52.09 | −7.30 |
| | SWA | Nara Simhan | 2,33,285 | 47.91 | |
| Margin of victory | Margin of victory | Margin of victory | 20,341 | 4.18 | −15.44 |
| Turnout | Turnout | Turnout | 4,86,911 | 67.32 | −6.29 |
| Registered electors | Registered electors | Registered electors | 7,41,660 | | 28.98 |
| | DMK hold | DMK hold | Swing | -7.30 | |

### General Elections 1967

1967 Indian general election: Chennai South :
| Party | Party | Candidate | Votes | % | ±% |
| | DMK | C. N. Annadurai | 248,099 | 59.38 | 14.65 |
| | INC | K. Gurumurti | 1,66,121 | 39.76 | 13.33 |
| | ABJS | R. M. A. Chettiar | 2,601 | 0.62 | |
| Margin of victory | Margin of victory | Margin of victory | 81,978 | 19.62 | 1.32 |
| Turnout | Turnout | Turnout | 4,17,783 | 73.60 | 2.00 |
| Registered electors | Registered electors | Registered electors | 5,75,015 | | 18.14 |
| | DMK hold | DMK hold | Swing | 14.65 | |

### General Elections 1962

1962 Indian general election: Chennai South :
| Party | Party | Candidate | Votes | % | ±% |
| | DMK | Nanjil K. Manoharan | 151,917 | 44.73 | |
| | INC | C. R. Ramaswamy | 89,771 | 26.43 | −19.50 |
| | TNP | E. V. K. Sampath | 63,768 | 18.78 | |
| | Independent | M. Ganapathy | 34,169 | 10.06 | |
| Margin of victory | Margin of victory | Margin of victory | 62,146 | 18.30 | 12.59 |
| Turnout | Turnout | Turnout | 3,39,625 | 71.61 | 34.07 |
| Registered electors | Registered electors | Registered electors | 4,86,728 | | 3.12 |
| | DMK gain from INC | DMK gain from INC | Swing | -1.20 | |

### General Elections 1957

1957 Indian general election: Chennai South :
| Party | Party | Candidate | Votes | % | ±% |
| | INC | T. T. Krishnamachari | 81,390 | 45.93 | 5.28 |
| | Independent | P. Balasubramania Mudaliar | 71,284 | 40.23 | |
| | Independent | H. D. Rajah | 24,516 | 13.84 | |
| Margin of victory | Margin of victory | Margin of victory | 10,106 | 5.70 | −2.58 |
| Turnout | Turnout | Turnout | 1,77,190 | 37.54 | −15.36 |
| Registered electors | Registered electors | Registered electors | 4,72,017 | | 27.81 |
| | INC hold | INC hold | Swing | 5.28 | |

### General Elections 1951

1951–52 Indian general election: Chennai South :
| Party | Party | Candidate | Votes | % | ±% |
| | INC | T. T. Krishnamachari | 79,431 | 40.66 | 40.66 |
| | Justice Party | Dr. Balasubramanyam | 63,254 | 32.38 | |
| | SP | Srinivasa Ramanujan | 16,835 | 8.62 | |
| | Independent | Krishna Pillai | 10,555 | 5.40 | |
| | All India Republican Party | Ramanathan | 9,535 | 4.88 | |
| | KMPP | Achar | 7,252 | 3.71 | |
| | Independent | Ramanathan Chettiar | 5,953 | 3.05 | |
| | HM | Srinivasa Iyer | 2,555 | 1.31 | |
| Margin of victory | Margin of victory | Margin of victory | 16,177 | 8.28 | |
| Turnout | Turnout | Turnout | 1,95,370 | 52.90 | |
| Registered electors | Registered electors | Registered electors | 3,69,299 | | 0.00 |
| | INC win (new seat) | INC win (new seat) | INC win (new seat) | INC win (new seat) | INC win (new seat) |