25. Mylapore

All India Anna Dravida Munnetra Kazhagam held the seat; the winning margin narrowed from 20.4% to 9.4%.

• Won on a lower shareIts own vote share fell 12.4% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 77.9% between them, down from 91.6% — the field split more ways.
• TurnoutTurnout fell 7.0% to 59.4%.

Written from the constituency figures by a fixed set of rules — no language model.