8. Bettiah

Indian National Congress held the seat; the winning margin widened from 6.7% to 12.3%.

• Won on a lower shareIts own vote share fell 15.2% — it held because the rest of the vote was more divided.
• Runner-up changedSecond place passed from Janata Party (JNP) to Independent (IND).
• Vote fragmentedThe top two took only 57.6% between them, down from 93.7% — the field split more ways.

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