19. Ambala City

Indian National Congress held the seat; the winning margin narrowed from 17.0% to 9.8%.

• Won on a lower shareIts own vote share fell 12.5% — it held because the rest of the vote was more divided.
• New challengerJS (JS) finished second with 32.7% — it did not contest here in 1957.
• Vote fragmentedThe top two took only 75.3% between them, down from 93.1% — the field split more ways.

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