21. Tirupathi

Indian National Congress held the seat; the winning margin narrowed from 7.7% to 1.8%.

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 15.3% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 75.3% between them, down from 100.0% — the field split more ways.
• TurnoutTurnout rose 12.0% to 70.0%.

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