20. Suangpuilawn

Indian National Congress held the seat; the winning margin narrowed from 2.2% to 0.4%.

• Won on a lower shareIts own vote share fell 7.8% — it held because the rest of the vote was more divided.
• New challengerPPC (PPC) finished second with 38.6% — it did not contest here in 1984.
• Vote fragmentedThe top two took only 77.6% between them, down from 91.5% — the field split more ways.

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