Gordon Brown has sought to re-assert his stamp on government with today’s reshuffle, but the big challenge of the reshuffle is its sustainability, and whether those in the new cabinet can restore a sense of purpose and vision to the government.

It is certainly better for keeping Alistair Darling at the Treasury – where there is still a huge job in turning around the economy – and promoting Alan Johnson to the Home Office. While I am sceptical of the Sir Alan Sugar promotion, and fear it may be as lasting as that of Digby Jones, it does bring some vital star quality to the line-up.

The fact that several of those identified as Blairites retain positions of power helps, with Andy Burnham promoted to health. But it is weakened by the hugely important loss of some excellent ministers including James Purnell, John Hutton and Beverley Hughes (the children’s minister). But I do wonder whether Barry Sheerman was not right in offering Gordon Brown a way settling the leadership question once and for all. Without a vote of confidence from his MPs, the doubts may simply remain.

A reshuffle is not enough in itself, of course, especially after today’s dismal council results. The government now needs to show vision, strategy and a sense of purpose over the next ten months. This is important not just on the economy and democratic reform, but across the public services. Since Ed Balls is staying at schools, he needs to stop allowing the Tories to wrap themselves in the mantle of Labour academies. He must show mettle in reclaiming the schools agenda for Labour. There are many in the schools world who worry that his department has drifted under his leadership with its attempts to cover the gamut of children’s policy at the expense of schools.

We have still to see the reshuffle in the lower ranks – and there are still opportunities there to shake-up the government’s performance and its effectiveness at communicating its message.

Andy Burnham has some genuine dividing lines with the Tories on health, where Labour’s waiting times and choice policies are paying dividends, and it is vital that Yvette Cooper doesn’t allow the excellent work of James Purnell at work and pensions to drift. There must also be renewed vigour from Alan Johnson at the home office on crime and policing. There must also be some candour on public expenditure.

Only from such a position of strength can Labour really challenge the Tories and demand that they explain how their policies would work. The old dividing lines of past elections simply lack credibility in today’s recession-hit economy and they need a complete rethink.

Most ministers have decided to stick with Gordon Brown, and it is highly unlikely that there will be any change at the top between now and the general election. Every minister has a clear duty to show why it matters that Labour is in power – and what the tough decisions are that need to be made. That is their challenge for the months ahead. The future of the Labour party is in their hands.