173. Dhuraiya

Communist Party of India held the seat; the winning margin narrowed from 19.8% to 8.8%.

• Won on a lower shareIts own vote share fell 9.9% — it held because the rest of the vote was more divided.
• New challengerIndian National Congress (INC) finished second with 30.5% — it did not contest here in 1977.
• Vote fragmentedThe top two took only 69.9% between them, down from 78.8% — the field split more ways.

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