18. Ozhukarai

All India Anna Dravida Munnetra Kazhagam held the seat; the winning margin narrowed from 15.2% to 8.1%.

• Won on a lower shareIts own vote share fell 15.7% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 74.1% between them, down from 98.5% — the field split more ways.

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