233. Kopachit

Indian National Congress held the seat; the winning margin narrowed from 10.2% to 1.3%.

Boundaries were redrawn between 1962 and 1967 — the comparison is matched by name and is indicative only.

• Won on a lower shareIts own vote share fell 19.4% — it held because the rest of the vote was more divided.
• New challengerSamyukta Socialist Party (SSP) finished second with 16.8% — it did not contest here in 1962.
• Vote fragmentedThe top two took only 34.8% between them, down from 64.7% — the field split more ways.

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