4. Lansdowne

Indian National Congress held the seat; the winning margin narrowed from 8.9% to 0.7%.

• Won on a lower shareIts own vote share fell 18.6% — it held because the rest of the vote was more divided.
• Runner-up changedSecond place passed from Janata Dal (JD) to Bharatiya Janata Party (BJP).
• Vote fragmentedThe top two took only 55.9% between them, down from 84.7% — the field split more ways.

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