1. Manjeswar

Communist Party of India held the seat; the winning margin narrowed from 9.5% to 0.3%.

• Won on a lower shareIts own vote share fell 13.7% — it held because the rest of the vote was more divided.
• New challengerMUL (MUL) finished second with 39.0% — it did not contest here in 1977.
• Vote fragmentedThe top two took only 78.4% between them, down from 96.7% — the field split more ways.

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