Why Sadiq Khan would win fourth term - even if most Londoners want him to stand down
(www.standard.co.uk)
Provisions for restoring the Supplementary Vote for mayoral and PCC elections are part of the English Devolution and Community Empowerment Act 2026, but parts of it are yet to come onto force. It was changed for the Greater Manchester mayoral by-election, so I see no reason why the system won't change before the next GLM election