39. Sagar

Indian National Congress held the seat; the winning margin narrowed from 43.8% to 15.1%.

• Won on a lower shareIts own vote share fell 21.4% — it held because the rest of the vote was more divided.
• New challengerJanata Dal (JD) finished second with 25.3% — it did not contest here in 1985.
• Vote fragmentedThe top two took only 65.8% between them, down from 79.9% — the field split more ways.

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