1. Constituency At a Glance
| Fact | Detail |
| Constituency Number | 13 |
| Parliamentary Zone | Chennai North (Lok Sabha) |
| Reservation Status | General (Unreserved) |
| Registered Voters (2026) | ~2,07,251 (post-SIR) |
| Voter Deletions (SIR 2025) | 1,02,000 — 35% drop (highest in North Chennai zone) |
| Voter Turnout 2021 | 60.52% |
| Sitting MLA | M.K. Stalin (DMK) — Chief Minister of Tamil Nadu |
| 2026 DMK Candidate | M.K. Stalin, B.A. (re-nominated for fourth consecutive term) |
| NDA Alliance Contestant | AIADMK (direct) + TVK fielding V.S. Babu (former MLA) |
| Party Win Rate Since 1977 | DMK: 3 wins (all post-2011 delimitation) |
Key Sub-Localities
Kolathur · MKB Nagar · Kodungaiyur · Thirumullaivoyal (border) · Madhavaram (border) · Villivakkam (adjoining) · Retteri
2. Constituency Overview
Kolathur is Assembly Constituency No. 13 — the most politically significant constituency in Tamil Nadu. It was created after the 2008 delimitation and has been held by M.K. Stalin, president of the DMK and Chief Minister of Tamil Nadu, in all three elections since 2011. Stalin’s personal vote here is enormous — in 2021 he won by a margin of 70,384 votes. A Chief Minister contesting from Kolathur makes every election cycle here a symbolic referendum on the DMK’s governance record.
3. 2026 Candidates and Party Positions
DMK — M.K. Stalin (B.A.) — Chief Minister
M.K. Stalin seeks his fourth consecutive Kolathur win in 2026. He has represented the constituency since 2011, previously having held Thousand Lights for three terms (1996–2006). As Chief Minister since 2021, Stalin’s 2026 campaign carries the full weight of five years of DMK governance — its achievements, its spending, and its promises. The DMK is likely to mobilise its most comprehensive booth-level infrastructure here as a matter of prestige.
AIADMK — Direct NDA Contest
The AIADMK contests Kolathur directly, knowing they will almost certainly lose. The constituency is framed as a statement seat. In 2021, AIADMK’s Aadhirajaram received only around 22% of the vote against Stalin’s 72%.
TVK — V.S. Babu (Former MLA)
TVK has fielded V.S. Babu — a former MLA who recently defected to TVK — against Chief Minister Stalin in Kolathur. This is TVK’s most symbolically charged candidacy. Babu’s familiarity with North Chennai politics and his status as a former legislator gives TVK a credible face in what is otherwise an unwinnable seat for any challenger. The outcome is not in doubt, but TVK’s vote share here will be closely watched as a proxy for the party’s North Chennai support.
4. Election History
| Year | Winner | Votes | Runner-Up | Margin |
| 2021 | M.K. Stalin (DMK) | 1,05,522 | Aadhirajaram (AIADMK) | 70,384 margin |
| Post-delimitation (2011–2021) | All three elections won by Stalin | — | — | — |
Party Win Rate: DMK: 3 wins in 3 post-delimitation elections (100% since 2011)
5. Key Local Issues for 2026
Kodungaiyur Garbage Dump Yard
The Kodungaiyur garbage dump — one of Chennai’s largest — sits within the Kolathur-Perambur boundary zone. Despite multiple promises of scientific closure and remediation, it remains operational. Residents in MKB Nagar, Kodungaiyur colony streets, and adjacent sub-localities complain of odour, leachate, and vector-borne disease. Every election cycle produces promises to close the dump; none have been fully delivered.
Stormwater Drainage Gaps
Kolathur experienced significant voter roll deletions of 1,02,000 names (35%) in the SIR 2025 — the highest in the North Chennai zone. Beyond the voter roll, residents cite incomplete stormwater drainage work along Madhavaram High Road, near Retteri, and in colony streets off the main Kolathur arterials as persistent monsoon-season concerns.
Connectivity to City Core
Kolathur residents commute to city-centre employment through congested North Chennai routes. Residents have consistently raised demands for improved bus connectivity, road quality on inner colony streets, and updated infrastructure on the Kolathur-Madhavaram corridor.
6. What to Watch in 2026
Kolathur 2026 is not about who wins (Stalin will). It is about the margin. A significantly compressed margin — below 50,000 — would be read as a signal of constituency-level discontent with five years of DMK governance. Stalin’s personal investment in the seat means the DMK will leave nothing to chance here.
7. Key Election Dates
| Event | Date |
| Gazette Notification | March 30, 2026 |
| Nomination Filing Opens | March 30, 2026 |
| Last Date for Nominations | April 6, 2026 |
| Nomination Scrutiny | April 7, 2026 |
| Last Date for Withdrawal | April 9, 2026 |
| Polling Day | April 23, 2026 |
| Counting and Results | May 4, 2026 |
| Assembly Term Ends | May 10, 2026 |
How to Check Your Voter Status
- Verify name: voters.eci.gov.in
- Download voter slip: CEO Tamil Nadu — ceotn.gov.in
- Check candidate affidavits after April 6: affidavit.eci.gov.in
- MCC complaints: Call 1950 or use the cVIGIL app