15. Champhai

Mizo National Front held the seat; the winning margin widened from 2.1% to 10.4%.

• Won on a lower shareIts own vote share fell 6.1% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 79.5% between them, down from 100.0% — the field split more ways.

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