11. Nettapakkam

Indian National Congress held the seat; the winning margin narrowed from 35.2% to 18.3%.

• Won on a lower shareIts own vote share fell 11.3% — it held because the rest of the vote was more divided.
• New challengerIndependent (IND) finished second with 36.5% — it polled just 0.8% in 1991.
• Vote fragmentedThe top two took only 91.4% between them, down from 97.0% — the field split more ways.

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