58. Tehatta

Indian National Congress held the seat; the winning margin narrowed from 41.4% to 25.9%.

• Won on a lower shareIts own vote share fell 14.3% — it held because the rest of the vote was more divided.
• New challengerCommunist Party of India (CPI) finished second with 30.5% — it did not contest here in 1957.
• Vote fragmentedThe top two took only 86.9% between them, down from 100.0% — the field split more ways.

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