61. Chalakudi

Janata Party held the seat; the winning margin narrowed from 7.3% to 5.2%.

• Won on a lower shareIts own vote share fell 5.0% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 88.5% between them, down from 96.5% — the field split more ways.

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