13. Gudivada

Indian National Congress held the seat; the winning margin widened from 4.4% to 10.2%.

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 13.6% — it held because the rest of the vote was more divided.
• New challengerCommunist Party of India (Marxist) (CPM) finished second with 25.2% — it did not contest here in 1962.
• Vote fragmentedThe top two took only 60.6% between them, down from 93.5% — the field split more ways.

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