5. Dina Nagar

Indian National Congress held the seat; the winning margin narrowed from 24.5% to 0.8%.

• Won on a lower shareIts own vote share fell 18.7% — it held because the rest of the vote was more divided.
• Runner-up changedSecond place passed from Bharatiya Janata Party (BJP) to Aam Aadmi Party (AAP).
• Vote fragmentedThe top two took only 72.4% between them, down from 86.1% — the field split more ways.

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