Guido has heard a rumour that Blair has asked the Cabinet Secretary and the Cabinet Office to look into the constitutionality of him remaining PM after resigning as Leader of the Labour Party. He would then serve a full third term as he promised, let the Labour party select their leader to fight the next election, but allowing him to stay on in a caretaker capacity, rather than resign as PM straight away. This is the “Aznar” solution, after the former Spanish PM Aznar who resigned as leader of the People’s Party to allow a successor to be chosen to fight the upcoming election.