17. Seohara

Indian National Congress held the seat; the winning margin narrowed from 12.9% to 2.8%.

• Won on a lower shareIts own vote share fell 8.3% — it held because the rest of the vote was more divided.
• New challengerIndependent (IND) finished second with 28.6% — it polled just 1.6% in 1980.
• Vote fragmentedThe top two took only 59.9% between them, down from 66.5% — the field split more ways.

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