DMK
The table below lists Dravida Munnetra Kazhagam (DMK) candidates, their total votes, vote share and final position in Madras South Lok Sabha Constituency in Tamil Nadu.
| Election year | Candidate Name | Votes Received | Vote Share (%) | Position | Status |
|---|---|---|---|---|---|
| 2004 | Baalu, T. R. | 564,578 | 60.41 | 1 | Won |
| 1999 | Baalu, T.R. | 562,221 | 60.03 | 1 | Won |
| 1998 | Baalu T.R. | 432,913 | 48.17 | 1 | Won |
| 1996 | Baalu T.R | 538,697 | 61.97 | 1 | Won |
| 1991 | T.R. Balu | 255,965 | 34.66 | 2 | Lost |
| 1989 | Arunachalam Alias Aladi Aruna | 320,020 | 38.77 | 2 | Lost |
| 1977 | Murasoli Maran | 226,204 | 47.66 | 2 | Lost |
| 1971 | Murasoli Naran | 253,626 | 52.09 | 1 | Won |