39. Pattambi

Communist Party of India (Marxist) held the seat; the winning margin narrowed from 30.3% to 6.3%.

• Won on a lower shareIts own vote share fell 8.8% — it held because the rest of the vote was more divided.
• New challengerCommunist Party of India (CPI) finished second with 44.8% — it did not contest here in 1967.
• Vote consolidatedThe top two candidates took 95.8% of the vote between them, up from 89.4% — a tighter two-way contest.

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