The Labour Party is in many ways already mourning its defeat at the forthcoming general election. There are still several possible outcomes to that election, but none of them is that Labour will emerge with a clear working majority. The bleak truth for Gordon Brown is that he is fighting his first and last election as Prime Minister. There is a general acceptance of this, and the mood in the parliamentary party is as resigned as it is jittery. The aim, at present, is to lose well, to expose the Conservatives and to prepare for life after Brown.
So what of the succession? Few doubt that a leadership contest is under way. The main contenders - Ed Balls, David and Ed Miliband, Harriet Harman, Jon Cruddas - may be fighting a phoney war, but it is a war of sorts all the same, with politicians on manoeuvres and the corridors and back rooms of power febrile with speculation. "The mood is very uneasy at present," one leadership contender told me. "But at least I'm prepared to speak honestly rather than relying on unattributable briefings."
Labour is deeply divided, on several levels. There are the old, obvious (and tedious) divisions between the Blairites and the Brownites - always a spurious division founded less upon ends than means. Blair and Brown were not separated by ideology: they both passionately believed in New Labour and accepted the neoliberal consensus. What separated them and their followers was character and cold ambition.
Yet, more important, surely, are the divisions between the freethinking liberal pluralists (or democratic republicans) and the unreconstructed statists in the party, as well as those between the free-market reformers and the social democrats. In recent months this magazine has begun
to campaign for a realignment of left-liberal politics. We are attracted by the idea of coalitions between progressives, especially if they result in electoral reform, genuine reform of the House of Lords and of the City, legislation for fixed-term parliaments, stronger civil liberties, an enhanced Freedom of Information Act, closer ties with Europe, a multilateral foreign policy and withdrawal from Afghanistan.
During the years of the long, unregulated boom, New Labour's high command entered into a Faustian pact with the forces of finance and with the repellent Bush administration. In so doing, the party ceased to be a moral crusade, and many of its natural supporters became alienated. They remain alienated, but without them Labour can never win again.
The economic crisis has offered Labour an opportunity to learn from the wrong turns taken in recent years, but also from what the party got right. From crisis can flow opportunity. Above all else, what is required, if the election results spell the end for Brown, is for the party to elect a leader who has the vision, ideas and stamina not only to remake his or her party, but to lead a complete reconstruction of the British political system. But who is that person? And what should his or her priorities be?
Economist and Labour life peer
I have seen seven Labour leaders come and six go - Wilson, Callaghan, Foot, Kinnock, Smith and Blair. Gordon Brown is still very much here and not likely to go before the election. The new Parliamentary Labour Party will be slim, with maybe no more than 150 members, and it will need someone who can reconcile and unite, who can think anew the theory for a 21st-century social democracy, and who can be an internationalist rather than a small Englander.
My choice for the crown of thorns? The field is two Eds and two Milibands (overlapping categories), Harriet Harman and Alan Johnson. Some pine for Jon Cruddas. I don't. It is not enough to be loved by the left: remember Michael Foot - lovely man, disastrous leader.
Johnson is loved by the unions, but then they loved and destroyed Jim Callaghan. Balls is unlikely to unite the party. Of the two Milibands, I go for David rather than Ed. So it is between David and Harriet. If we are to take Middle England with us, it has to be David. I say that with some trepidation, lest it harm his prospects.
Deputy leader of the Labour Party (1983-92)
Speculating about who will be the next Labour leader is good journalism but rotten politics.
If Labour wins the next election - and victory remains within the party's power - the next leader will not take over until 2014, and four years is a long time in politics. Long ago, Jim Callaghan told me that the party would be led, in ten years' time, by David Owen, me or somebody nobody had heard of. It turned out to be somebody who, then, nobody had heard of.
After the next election but one, it will be James Purnell, Ed Miliband, Jon Cruddas - or somebody nobody has heard of. I will vote for Miliband. Each of the politicians on my "shortlist" is a genuine radical who realises the importance of Labour setting out its vision of the good society and describing the practical - and sometimes necessarily controversial - policies that will bring it about. Ideological caution is the certain path to defeat. Whoever first made the point, New Labour foundered because it was "neither new enough nor Labour enough". The next leader must - instead of trying to invent an alternative to social democracy - work out a way of applying its basic principles to the modern and changing world.
General secretary, Fabian Society
More important than who should lead is how Labour could get its next leadership election right. Let's hope it takes place in government, a few years from now. But if Labour loses this spring, the first decision could be its most important in opposition: whether to have an immediate leadership contest or leave it until after the first autumn conference. If Michael Howard had not done the latter in 2005, the Tory leader would be David Davis, not David Cameron.
If Labour goes straight for a contest, we would miss the debate we need. So let's see the merits in playing it long. If Labour loses, Gordon must stay! If he prefers to make a quick exit, the National Executive Committee should appoint a caretaker and schedule an autumn contest. It could make a real difference to the chances of being out for one term, or three. Front-runners - such as David Miliband, Ed Balls or Harriet Harman - should not fear a longer debate with more ideas. Those who might not run - perhaps James Purnell and Jon Cruddas - might sharpen debates.
Without hearing their arguments, it is too early to set the field. So why not imagine that Ed Miliband and Yvette Cooper could surprise us by emerging in front, with Cooper edging home as the party's first permanent woman leader?
Writer, broadcaster and life peer
I'm in at least four minds as to who should be the next Labour leader. When is the law coming in that allows peers to resign from the House of Lords? Because Hamlet/Mandelson looks very fit for the part of the new prince.
Professor of politics at Oxford University
Assuming Labour loses the election - not yet certain, but a lot more probable than not - the party will need to skip the generation immediately after Brown's and go for someone in the generation after that. The choice will be between the Miliband brothers: David or Ed.
Clearly, this will be psychologically difficult for them. Sibling rivalry is a powerful force. Ed and David seem well-balanced and harmonious. All the same, I imagine David would find it hard to give way to his younger brother. But so what? The party will have a right to pick the better man for the job, and I don't think there's any doubt that that means Ed should be the one to go for it. He is both a safe pair of hands and a potentially inspirational figure. A very rare combination.
He would face a daunting task. I don't believe Labour has yet taken the measure of David Cameron and the new-look Tory party he has constructed. Labour politicians and Labour-friendly commentators have convinced themselves that the new-look Tories are fakes: that, like old-look Thatcherites, they are slavering at the thought of making savage cuts in spending; and that Labour in opposition will reap a rich harvest of disillusioned Tory voters without having to engage in painful rethinking of its own. I think this is self-indulgent piffle. The truth is that social democracy is on the slide all over Europe. I don't pretend to know how the left should respond to this melancholy tale. Nor, I suspect, does Ed Miliband. But he has shown that he has the intellectual capacity to think through the problems - and the charisma to lead his party in the search for answers. It would be madness to choose anyone else.
QC and Labour life peer
I really do think it is premature to have this debate. There is a whole set of potential leaders among the next generation, and I do not want to see some has-been who is seriously tainted by his or her complicity in the Iraq war taking on the mantle as some interim measure.
If and when a new leader is required, I want to see a proper debate within the party about what that person believes in and where they will take the party in the future. Whoever succeeds in taking on the role will have to throw off the taint of many New Labour policies and be prepared to participate in a total review of policy and vision. I think Compass is where the new thinking is currently taking place, and any prospective leader with any sense should be looking closely at its work.
Chair of Compass
Jon Cruddas should be the next leader of the Labour Party, because he understands that we face a triple crisis of inequality, sustainability and democracy, and that we need a progressive alliance of parties, unions and civil society organisations to make change happen and embed it. In practice, that means the effective regulation of businesses, and measures to democratise public services, such as a high-pay commission at one end and a living wage at the other; and real proportional representation, to ensure a new era of pluralistic politics rather than the domination of a few swing voters led by Murdoch and the Mail.
Above all, a candidate such as Cruddas would bring hope back into centre-left politics; the hope that we are aiming for a good society and have the wherewithal to make it happen.
General secretary of the Communication Workers Union (CWU)
There is no contest - Gordon Brown. To reconnect with millions of voters lost since 2001, we need to reassert the coalition between working-class communities and liberal-minded professionals. First, an expansionary economic policy is vital. Shutting down the government's life support to the economy could precipitate a double-dip recession. That is where the Tories would have gone, and will go. Labour must be different - voters will appreciate this.
Second, there must be a break from policies that have fractured our electoral coalition. Scrapping ID cards, committing to withdrawal from Afghanistan and scrapping the Trident replacement and aircraft carriers would help; they would also transform the future of government spending. Third, the problems of the housing market must be addressed. The private sector will not deliver for five million on the council-house waiting list. Government support for social housing is crucial.
Political economist and life peer
Your question is based on the assumption that Labour will lose the next election. I don't think this is a foregone conclusion. Labour might win a small majority or form a minority government with Liberal support. In either case, Brown will stay on as leader and Prime Minister. As to his successor, I have no preference.
Labour has a great opportunity to work out a post-slump political agenda. This could be based on: a) an expanded role for the state in the investment field (railways, housing, schools, hospitals, green technology), and b) greater equality of wealth and incomes. Both would require bringing the share of GDP spent by the state more in line with the European norm, but this will be necessary anyway for purposes of fiscal consolidation and one may as well make a virtue of it. The party should set up a high-powered commission of a non-partisan character to work out an intellectually grounded post-slump programme of action. The commission should be set up as soon as possible (ie, before the election), and its existence and preliminary findings should be one of the main grounds on which the government appeals to the country.
Musician and activist
I want a leader who will do something about excessive bonuses and who will split up high street banks from the casino banks, so that next time the bankers mess up they lose their homes and we don't lose ours.
Director general of the BBC (2000-2004)
I suspect that we are living through the final months of the last Labour government ever to have an overall majority, as, by the time Labour has another chance to govern, the political world will be very different.
I suspect wholesale change in our political system will come faster than many imagine. The decline of the two-party system has been happening for years - in 1951, 97 per cent of the electorate voted either Labour or Conservative; in the last election, that was below 70 per cent - but the MPs' expenses scandal has put the final boot into politics as we've known it. The election could well result in a hung parliament which, in turn, could bring the vast reforms we need. The introduction of proportional representation is no longer a matter of if, but when.
The next Labour leader will need to articulate a new left-of-centre ideology, unite the rational left, see off the Blairites and be able to negotiate with and befriend other radical parties in this new era of politics. Tough job.
Director of Demos
It is tempting to say that the next leader should be Anybody Who Is Not Ed Balls. But the party should aim higher. David Miliband is a serious candidate, but he is seen as indecisive in the Parliamentary Labour Party, and has never been hugely popular in the constituencies or the unions. James Purnell remains the lodestar for liberal modernisers - but I am biased since he is a colleague at Demos. Perhaps Liam Byrne should be the next leader: he is younger, brighter and more passionate than many of his colleagues.
The new leader should ditch the anti-civil liberties measures of Blair/Brown; come out in support of real proportional representation; form a coalition with the Liberal Democrats; support or steal the Tories' education plans; base a new attack on poverty and plans for public service reform on the "capabilities" approach of Amartya Sen; avoid new incursions against freedom in areas such as smoking and alcohol; and adopt Lib Dem tax policies hitting wealth, rather than income.
Last but not least, the new leader should surround themselves with people who will tell them when they are screwing up.
Businessman and Labour donor
I think that Gordon Brown will now lead the Labour Party to the next general election. He will have a good chance of winning a small majority, but only if he reverts to being a strong, robust and determined leader, as he was when he started as Prime Minister. He is obviously surrounded by inexperienced ministers and advisers. They have managed to transform him into a person who performs for the media in a gimmicky way - that was never Brown's style.
However, if, for whatever reason, Labour needs a new leader, I think that the only person who will be able to lead and unite the party is Harriet Harman. She appears to be a strong personality, and charismatic without being a clown like Cameron. She will probably succeed, provided she doesn't allow the so-called PR experts to destroy her personality with their superficial techniques.
Labour MP for Birkenhead
Labour, whether it wins or loses, will be faced by a new kind of politics after the election. We will have to put behind us the modern era, when governing was largely about distributing a continual real-terms growth in public expenditure. The new politics of cuts will be centre stage, requiring leadership qualities that can combine Labour's idealism - particularly protecting those towards the bottom of the pile - with a realism that appeals to the majority. Courage will, above all, be required to mark out the political map of this new country, but with that courage must go stamina, and also judgement when taking risks in repositioning the party.
While there are a number of candidates who possess some of the necessary qualities, I see James Purnell as the one individual who combines most of them. But Labour in the new parliament will also need a deputy leader who can reach those parts of the electorate untouched by the current leadership, and who will also be trusted by our core voters as we engage that new country. Step forward, Jon Cruddas.
General secretary of the National Union of Rail, Maritime and Transport Workers (RMT)
Who leads the Labour Party isn't the issue. What matters is that the party has presided over attacks on workers through the anti-union laws and privatisation, and through the extension of powers to the European superstate. Until Labour wakes up and starts fighting for the workers rather than the bosses, it's a dead duck, politically.
Who should be leader? None of the present clique. What to do: reassert Clause Four and act on it to the letter.
Former Labour MP
It is very late in the day, but if part of the answer to Labour's problems is a new leader, we need an analysis of what is wrong in order to look for the kind of leader who might be able to put things right. I do not believe that anyone really knows the qualities of a politician until they have worked with them. Potential leader spotting is led by the media on the basis of unexplained qualities that appear to be completely presentational. Underneath this is a pro-Blair versus pro-Brown division. But this, too, is entirely presentational. They created New Labour together. Brown was the brain, Blair the frontman. The clashes were of egos, ambition and hangers-on, not of principle or strategy.
The reality is that the New Labour project has collapsed. Now we need someone who respects the democratic process in the party, parliament and cabinet. We need someone who wants to reverse the growth of inequality in the UK. We need someone who is willing to reorientate UK foreign policy, peel off from our craven, lapdog role and start to work with others for a stronger UN and a more equitable world order. We need a leader who will cease to echo US/Israeli policy in the Middle East and work with others for a just settlement in accordance with international law. The tragedy for Labour is that there is no such potential leader in the parliamentary party and little discussion in the wider party of how these changes might be made.
Former adviser to Tony Blair
Speculation about the next Labour leader is predicated on expectations of defeat at the election. But the question is legitimate. The debate and manoeuvring that accompany it are impossible to hide. Unless Gordon Brown pulls off a remarkable victory, the task confronting the next leader will be determined by the scale of Labour's defeat. Whoever it is must have an unambiguous understanding of what made New Labour popular. Of the two styles of politics embodied in the leadership since 1994, one worked and one didn't. If we want a compromise candidate whom we never expect to form a government, we may go for Harriet Harman.
If we want a leader with the creativity, popular appeal and determination to lead us back into power, the shortlist boils down to David and Ed Miliband, Andy Burnham and James Purnell. I would support the Foreign Secretary.
Former adviser to Gordon Brown
There's going to be no leadership election because we're going to win the election and Gordon Brown's going to be leader.
Member of Labour's National Executive Committee
The next leader of the Labour Party should be Gordon Brown - there is no vacancy. Without Brown, we would have faced the sort of economic meltdown they have seen in Iceland or Ireland. We are facing a Tory party more right-wing at every level than it was under Margaret Thatcher. This isn't the time for these dinner-party debates; it's time for Labour supporters to be campaigning hard for a Labour victory. I am just on my way out to deliver some leaflets - anyone is welcome to join us.