30. Itahar

Indian National Congress held the seat; the winning margin narrowed from 32.6% to 3.9%.

• Won on a lower shareIts own vote share fell 4.4% — it held because the rest of the vote was more divided.
• New challengerCommunist Party of India (CPI) finished second with 47.1% — it did not contest here in 1967.
• Vote consolidatedThe top two candidates took 98.1% of the vote between them, up from 78.1% — a tighter two-way contest.

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