23. Koduvally

MUL held the seat; the winning margin narrowed from 7.2% to 5.1%.

• Won on a lower shareIts own vote share fell 5.3% — it held because the rest of the vote was more divided.
• New challengerJanata Party (JNP) finished second with 43.2% — it did not contest here in 1980.
• Vote fragmentedThe top two took only 91.5% 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.