284. Dhanbad

Indian National Congress held the seat; the winning margin narrowed from 34.8% to 15.9%.

• Won on a lower shareIts own vote share fell 23.6% — it held because the rest of the vote was more divided.
• New challengerJanata Party (JNP) finished second with 20.8% — it polled just 0.9% in 1980.
• Vote fragmentedThe top two took only 57.5% between them, down from 85.7% — the field split more ways.

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