60. Siwan

Indian National Congress held the seat; the winning margin widened from 16.4% to 18.6%.

• Won on a lower shareIts own vote share fell 7.0% — it held because the rest of the vote was more divided.
• New challengerJS (JS) finished second with 22.0% — it did not contest here in 1957.
• Vote fragmentedThe top two took only 62.7% between them, down from 79.0% — the field split more ways.
• TurnoutTurnout rose 8.5% to 45.2%.

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