The move will head off fears that Labour will lose the seat in a by-election, but the Tories may use it against Khan.
From Sure Start to the Olympics, Tessa has delivered for London before and she can do so again.
Frontrunner Burnham warns that Labour must "take care not to distance ourselves from the last five years" on the issue of inequality.
Devolution to Greater Manchester was greeted with general celebration. But there are broader concerns about the role and how it develops.
Sol Campbell is the most high-profile figure to declare his interest in being the Conservative candidate to succeed Boris Johnson so far.
Time is running out for the party to prove it can revitalise itself.
You can't win if people don't trust you - but "trust" is rather more complicated than you might think.
Labour may soon find itself just as riven by Europe as the Conservative Party.
Caroline Flint has revealed the names of 12 more supporters, taking her total to 24 overall.
Welfare reform could have momentous consequences for Northern Ireland and the future of the Stormont parliament.
The single biggest thing that Londoners need from their next Mayor: a solution to the housing crisis.
Immigration is part of our history, and our future must be neither narrow nor fragmented.
Jeremy Corbyn, the leftwing MP, has announced he will seek nominations for the Labour leadership race. His chances are better than they look.
Today marks the 40th anniversary of Britain's last referendum on its membership of the European Union. But both In and Out must move on from that contest if they are to win the next one.
The way Labour does politics must change - or the party will simply lose again.
The former leader has quickly taken up the cause he championed in office.
Libya has fallen victim to poor planning and wooly thinking. But a document from the country's past could save its future.
The In-Out referendum isn't a foregone conclusion - and complacy could win it for No.
The full text of Tim Farron's tribute to Charles Kennedy, the former Liberal Democrat leader, who died this week.
A late alternative option has emerged for Labour's next leader: the ardent socialist, Jeremy Corbyn.
You should never trust a round number in politics, and this one in particular looks fishy.
The coalition minister who lost her Scottish seat at the election reflects on her party’s defeat.
White working-class boys do worse than anyone else at school.
Now the bidding war is over, the government must turn its attention to what it will do for the under-5s.
The PM effortlessly controlled the first session of the new term.
The electoral system has always been unfair and undemocratic - but now it could shut Labour out for generations. The time is right to embrace reform.
Our liberal political family has lost one of its most admired advocates. British politics has lost one of its best storytellers. This House has lost one of its warmest wits and most loyal Parliamentarians.
Housing is one of the biggest challenges we face in London. I'm backing Tessa Jowell as the politician who can do something about it.