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Lok Sabha constituency

Chennai South Lok Sabha Election Data

Chennai, Tamilnadu

  • Reservation:General
  • Registered Electorate:19,73,315
  • Sitting MP:T.sumathy (a) Thamizhachi Thangapandian (DMK)
  • Latest Turnout:56.9%
  • 2019 Winning Margin:2,61,088 votes (23.6%)

Chennai South is a Lok Sabha constituency in Chennai, Tamilnadu, with 19,73,315 registered voters. The current MP is T.sumathy (a) Thamizhachi Thangapandian of DMK, who won the 2019 election by a margin of 2,61,088 votes (23.6%). Voter turnout in the last election was 56.9%. Below you'll find caste demographics, election history since 2008 and booth-level data for Chennai South.

Demographics

Chennai South Caste Data

Chennai South Lok Sabha in Tamilnadu has approximately 19,73,315 registered voters on the latest roll, with surname-level community estimates covering 7 groups commonly used in Tamilnadu election analysis. SC is the largest share at 12.6%, followed by Muslim at 8.6%. This is a General Lok Sabha seat at constituency level; the table below lists surnames with estimated voter counts and share of the profile—not booth-by-booth splits. For campaign planning and newsroom research, VoteSutra also provides booth-wise surname maps, swing booth reports and full dossiers on WhatsApp request.

  • SC:12.6%
  • ST:0.2%
  • SC
    12.6%
    —
  • Muslim
    8.6%
    —
  • Christian
    7.52%
    —
  • Jain
    0.95%
    —
  • ST
    0.2%
    —
  • Buddhist
    0.06%
    —
Go deeper

Get booth-level caste data for Chennai South

This aggregate view sits on top of a full booth-wise caste map. Delivered as CSV plus a visual heatmap within one working day.

Historical archive

Chennai South Election Results (2008–2026)

AIADMK has won 4 of the last 6 elections in Chennai South.

2021 Result
Dmk Party Candidates DMK
Won by 2,61,088 votes (23.6%)
Latest
  • Dmk Party Candidates
    DMK
    38%
    4,50,530
  • Aiadmk Party Candidates
    AIADMK
    35.3%
    4,18,721
  • Inc Party Candidates
    INC
    5.8%
    68,493
  • Dmdk Party Candidates
    DMDK
    0.5%
    5,497
Booth intelligence

Chennai South Booth-Level Data

Data being compiled

Booth data for Chennai South being compiled

Polling-station-level rankings and margins being finalised. Request early access on WhatsApp.

FAQ

Common questions about Chennai South

Conclusion

Chennai South Lok Sabha constituency at a glance

In conclusion, Chennai South Lok Sabha in Tamilnadu is a General Lok Sabha constituency with about 19,73,315 registered voters. The current MP is T.sumathy (a) Thamizhachi Thangapandian (DMK), elected in 2019 by 2,61,088 votes (23.6%). Community estimates place SC as the largest group at roughly 12.6% of the seat profile. The seat spans 6 Vidhan Sabha assembly segments, each with its own booth-level story. Election results on this page run back to 2008, with cycle-by-cycle margins and party shifts. Booth-level rankings and swing maps are available on request when compilation is complete. Whether you are planning a campaign, covering the seat as a journalist, or researching Tamilnadu politics, this page is the free starting point—message VoteSutra on WhatsApp for the complete booth-wise caste and strategy report for Chennai South.

Contesting Chennai South?

Get the full booth-wise demographic and voting dossier for Chennai South.