57. Mahendragarh

Indian National Congress held the seat; the winning margin narrowed from 20.6% to 3.4%.

• Won on a lower shareIts own vote share fell 23.6% — it held because the rest of the vote was more divided.
• New challengerJS (JS) finished second with 26.4% — it did not contest here in 1957.
• Vote fragmentedThe top two took only 56.2% between them, down from 86.1% — the field split more ways.

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