10. Raxaul

Indian National Congress held the seat; the winning margin narrowed from 15.9% to 4.5%.

• Won on a lower shareIts own vote share fell 12.1% — it held because the rest of the vote was more divided.
• New challengerSOP (SOP) finished second with 33.6% — it did not contest here in 1969.
• Vote fragmentedThe top two took only 71.8% between them, down from 84.7% — the field split more ways.

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