Portsmouth City councillor Mike Hancock has quit his cabinet position in the Liberal Democrat led authority.
It comes hours before a meeting this evening that was due to see the Lib-Dem group vote on whether the councillor should keep his position.
Tonight's meeting will now decide who will take up the position.
More top news
Saturday's weather for the east with Philippa
Saturday's weather for the west with Philippa
Memorial events are taking place in tribute to the victims of the Shoreham air crash.