65. Kalasapakkam

All India Anna Dravida Munnetra Kazhagam held the seat; the winning margin narrowed from 24.5% to 14.2%.

• Won on a lower shareIts own vote share fell 13.5% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 76.6% between them, down from 93.4% — the field split more ways.

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