216. Tenkasi

Indian National Congress held the seat; the winning margin narrowed from 22.9% to 6.0%.

• Won on a lower shareIts own vote share fell 24.2% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 66.5% between them, down from 98.0% — the field split more ways.

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