Another possibility is that the opposition parties unite to form the government - the largest one, the Constitutional Democratic Party (CDP), won 148 seats up from 98 previously.

But that is a more unlikely scenario as Japan’s opposition parties historically have faced difficulty in uniting or convincing voters they are a viable option to govern.

Extremely strange conclusions. If they won the election there is no “convincing voters” step for parliamentary alliances. I don’t know if BBC is displaying outrageous favoritism, or if Japan is truly weird.