Lord Ashcroft's marginals poll shows the route to a Labour majority

Labour would win a majority of 84 by gaining 93 seats off the Tories and 13 off the Lib Dems. But remember: it's a snapshot, not a prediction.

I've just returned from ConservativeHome's Victory 2015 conference, where Lord Ashcroft (recently profiled for the NS by Andrew Gimson) presented the findings of his huge new marginals poll. These are the seats that elections are won and lost in, so Ashcroft's survey of 19,000 voters in 213 constituencies is the best guide we have to who would win were a general election held today. Polls like this answer the questions that national surveys cannot. Is Labour just piling up votes in its northern and Scottish strongholds? How many seats can the Tories hope to win off the Lib Dems? How many seats can Labour hope to win off the Tories?

Ashcroft's poll shows that although the swing to Labour is lower in the marginals than nationwide (largely due to first term Tory MPs benefiting from an incumbency effect), Ed Miliband would still enter Downing Street with a majority of 84 after a net gain of 109 seats (leaving Labour with 367 MPs). This compares to a majority of 114 on a uniform national swing.

While the Conservatives would win 17 seats off the Lib Dems (including Eastleigh), these gains pale in comparison to the losses they would suffer. Ninety three of the Tories' 109 most marginal seats would fall to Labour, with the biggest swings in the Thames estuary (10.5 per cent) and the Midlands (9.5 per cent). As I've written before, the defection of left-leaning Lib Dem voters to Labour in these seats means the Conservatives will struggle to remain the largest single party, let alone win a majority. There are, for instance, 37 Con-Lab marginals where the third place Lib Dem vote is more than twice the margin of victory.

In addition to gaining 93 seats off the Tories, Labour would win 13 off the Lib Dems, with a 17 per cent swing to the party in those seats where it is in second place. All but two of the latter would fall to Labour as well as two seats – Cambridge and Leeds North West – where it is currently third.

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 the opposition comes under greater scrutiny (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, two years 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.

Lord Ashcroft's poll shows that Labour would win 93 of the Conservatives' 109 most marginal seats. Photograph: Getty Images.

George Eaton is political editor of the New Statesman.

Photo: Getty
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The government needs more on airports than just Chris Grayling's hunch

This disastrous plan to expand Heathrow will fail, vows Tom Brake. 

I ought to stop being surprised by Theresa May’s decision making. After all, in her short time as Prime Minister she has made a series of terrible decisions. First, we had Chief Buffoon, Boris Johnson appointed as Foreign Secretary to represent the United Kingdom around the world. Then May, announced full steam ahead with the most extreme version of Brexit, causing mass economic uncertainty before we’ve even begun negotiations with the EU. And now we have the announcement that expansion of Heathrow Airport, in the form of a third runway, will go ahead: a colossally expensive, environmentally disastrous, and ill-advised decision.

In the House of Commons on Tuesday, I asked Transport Secretary Chris Grayling why the government is “disregarding widespread hostility and bulldozing through a third runway, which will inflict crippling noise, significant climate change effects, health-damaging air pollution and catastrophic congestion on a million Londoners.” His response was nothing more than “because we don’t believe it’s going to do those things.”

I find this astonishing. It appears that the government is proceeding with a multi-billion pound project with Grayling’s beliefs as evidence. Why does the government believe that a country of our size should focus on one major airport in an already overcrowded South East? Germany has multiple major airports, Spain three, the French, Italians, and Japanese have at least two. And I find it astonishing that the government is paying such little heed to our legal and moral environmental obligations.

One of my first acts as an MP nineteen years ago was to set out the Liberal Democrat opposition to the expansion of Heathrow or any airport in southeast England. The United Kingdom has a huge imbalance between the London and the South East, and the rest of the country. This imbalance is a serious issue which our government must get to work remedying. Unfortunately, the expansion of Heathrow does just the opposite - it further concentrates government spending and private investment on this overcrowded corner of the country.

Transport for London estimates that to make the necessary upgrades to transport links around Heathrow will be £10-£20 billion pounds. Heathrow airport is reportedly willing to pay only £1billion of those costs. Without upgrades to the Tube and rail links, the impact on London’s already clogged roads will be substantial. Any diversion of investment from improving TfL’s wider network to lines serving Heathrow would be catastrophic for the capital. And it will not be welcomed by Londoners who already face a daily ordeal of crowded tubes and traffic-delayed buses. In the unlikely event that the government agrees to fund this shortfall, this would be salt in the wound for the South-West, the North, and other parts of the country already deprived of funding for improved rail and road links.

Increased congestion in the capital will not only raise the collective blood pressure of Londoners, but will have severe detrimental effects on our already dire levels of air pollution. During each of the last ten years, air pollution levels have been breached at multiple sites around Heathrow. While a large proportion of this air pollution is caused by surface transport serving Heathrow, a third more planes arriving and departing adds yet more particulates to the air. Even without expansion, it is imperative that we work out how to clean this toxic air. Barrelling ahead without doing so is irresponsible, doing nothing but harm our planet and shorten the lives of those living in west London.

We need an innovative, forward-looking strategy. We need to make transferring to a train to Cardiff after a flight from Dubai as straightforward and simple as transferring to another flight is now. We need to invest in better rail links so travelling by train to the centre of Glasgow or Edinburgh is quicker than flying. Expanding Heathrow means missing our climate change targets is a certainty; it makes life a misery for those who live around the airport and it diverts precious Government spending from other more worthy projects.

The Prime Minister would be wise to heed her own advice to the 2008 government and “recognise widespread hostility to Heathrow expansion.” The decision to build a third runway at Heathrow is the wrong one and if she refuses to U-turn she will soon discover the true extent of the opposition to these plans.

Tom Brake is the Liberal Democrat MP for Carshalton & Wallington.