15. Kamalasagar

The seat changed hands: Indian National Congress (INC) lost it to Communist Party of India (Marxist) (CPM), which now leads by 37.9%.

Boundaries were redrawn between 1972 and 1977 — the comparison is matched by name and is indicative only.

• CPM vote shareCPM went from 30.9% to 58.1% of the vote here (+27.2%).
• New challengerJanata Party (JNP) finished second with 20.2% — it did not contest here in 1972.
• Vote fragmentedThe top two took only 78.4% between them, down from 83.5% — the field split more ways.

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