15. Champhai

Mizo National Front held the seat; the winning margin narrowed from 10.4% to 1.8%.

• Won on a lower shareIts own vote share fell 7.5% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 73.3% between them, down from 79.5% — the field split more ways.

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