At an event at Tate Modern, Sadiq Khan pledged to clean up London's act.
Boundary changes, Scotland and a new Tory leader mean the task is formidable. But five years is an eternity in politics.
It wasn't just Labour and the Liberal Democrats who suffered a heavy defeat last Thursday - the opinion pollsters did too.
Harriet Harman, Labour's acting leader, will conduct a minor reshuffle once the Conservatives have outlined their team.
Tom Watson has his eye on Labour's deputy leadership job.
The Green party's economic spokesperson reflects on Labour and the media's pandering to the the Tory narrative.
The Lib Dems became the anti-conviction party.
Unannounced rival campaign accuses shadow ministers of "behaving like family members taking jewellery off a corpse".
The shadow business secretary gives a clear pitch for the Labour leadership, decrying the party's narrow appeal.
The race to be Ed Miliband's successor has kicked off, albeit unofficially, with meetings between the key teams and recruitment already underway.
The Zombie PM
The doomed premiership of Theresa May