Lord Ashcroft's marginals poll gives Labour and the Lib Dems reasons to be cheerful

Labour has a 14-point lead in the 32 most marginal Tory-Labour seats, while the Lib Dems are just three points behind the Conservatives in the eight most competitive Tory-Lib Dem seats.

After the return of economic growth and the narrowing of Labour's poll lead prompted some Tories to talk of a "glide path to victory", Lord Ashcroft's marginals poll has provided a much-needed dose of realism. The survey of the Conservatives' 40 most vulnerable constituencies shows that the defection of Tory supporters to UKIP means that Labour now enjoys a 14-point lead in the 32 seats where it is in second place, compared to a national lead of just five in Ashcroft's poll. In short, the party is gaining support where it matters most. Labour is on 43% (down one since 2011), the Tories are on 29% (down six), UKIP is on 11% and the Lib Dems are on 8%. That lead is large enough for Miliband's party to win the 32 most competitive Con-Lab marginals and a further 66 off the Tories if the swing is replicated elsewhere, putting it on course for a comfortable majority.

But it isn't just Labour and UKIP that have cause to be cheerful; there's also some rare good news for the Lib Dems. In the eight most marginal Con-Lib Dem seats, Nick Clegg's party is just three points behind David Cameron's, with a swing of only 0.5% to the Tories since 2010. The Conservatives are on 32%, with the Lib Dems on 29%, Labour on 18% and UKIP on 12%. For the Lib Dems, it is further evidence that their vote is holding up where they are competitive. Rather than merely defending their existing 57 seats, the surge of UKIP (which draws around 60% of its support from 2010 Tories) means that the Lib Dems could yet hope to dislodge the Tories in seats where they are vulnerable.

The poll will gladden Labour hearts and darken Tory ones but it's important to remember, as Ashcroft says, that it is "a snapshot", not a prediction. It tells us what would happen were a general election held today, not what is likely to happen in 2015. Governments invariably gain support in the run-up to a general election as voters stop treating opinion polls as a referendum on the government (2010 was typical of this), so Labour needs a large cushion of support to be confident of victory. A similar poll conducted by PoliticsHome in September 2008 suggested the Conservatives would win a landslide majority of 146 seats, while another, carried out in October 2009, pointed to a Tory majority of 70. Just seven months later, Cameron was left with no majority at all. In other words, 18 months out from the general election, only the most optimistic Labourite or the most pessimistic Tory would treat this poll as a reliable indicator of the result.

David Cameron, Ed Miliband and Nick Clegg attend a ceremony at Buckingham Palace to mark the Duke of Edinburgh's 90th birthday on June 30, 2011. Photograph: Getty Images.

George Eaton is political editor of the New Statesman.

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Geoffrey Howe dies, aged 88

Howe was Margaret Thatcher's longest serving Cabinet minister – and the man credited with precipitating her downfall.

The former Conservative chancellor Lord Howe, a key figure in the Thatcher government, has died of a suspected heart attack, his family has said. He was 88.

Geoffrey Howe was the longest-serving member of Margaret Thatcher's Cabinet, playing a key role in both her government and her downfall. Born in Port Talbot in 1926, he began his career as a lawyer, and was first elected to parliament in 1964, but lost his seat just 18 months later.

Returning as MP for Reigate in the Conservative election victory of 1970, he served in the government of Edward Heath, first as Solicitor General for England & Wales, then as a Minister of State for Trade. When Margaret Thatcher became opposition leader in 1975, she named Howe as her shadow chancellor.

He retained this brief when the party returned to government in 1979. In the controversial budget of 1981, he outlined a radical monetarist programme, abandoning then-mainstream economic thinking by attempting to rapidly tackle the deficit at a time of recession and unemployment. Following the 1983 election, he was appointed as foreign secretary, in which post he negotiated the return of Hong Kong to China.

In 1989, Thatcher demoted Howe to the position of leader of the house and deputy prime minister. And on 1 November 1990, following disagreements over Britain's relationship with Europe, he resigned from the Cabinet altogether. 

Twelve days later, in a powerful speech explaining his resignation, he attacked the prime minister's attitude to Brussels, and called on his former colleagues to "consider their own response to the tragic conflict of loyalties with which I have myself wrestled for perhaps too long".

Labour Chancellor Denis Healey once described an attack from Howe as "like being savaged by a dead sheep" - but his resignation speech is widely credited for triggering the process that led to Thatcher's downfall. Nine days later, her premiership was over.

Howe retired from the Commons in 1992, and was made a life peer as Baron Howe of Aberavon. He later said that his resignation speech "was not intended as a challenge, it was intended as a way of summarising the importance of Europe". 

Nonetheless, he added: "I am sure that, without [Thatcher's] resignation, we would not have won the 1992 election... If there had been a Labour government from 1992 onwards, New Labour would never have been born."

Jonn Elledge is the editor of the New Statesman's sister site CityMetric. He is on Twitter, far too much, as @JonnElledge.