Are Labour up or down today? Photo: Getty.
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How much attention should we pay to daily polls?

The daily numbers are interesting, but the trend tells the story.

This post was originally published on May2015.com.

How much attention should you pay to the polls? This week Labour have led comfortably, then drifted down, and now the Tories “lead”, according to YouGov’s overnight tracking poll.

This is – as some have pointed out – noise. The trend is what is worth watching, along with the results of each polling house, rather than just one. Reporting on the polls throughout the week relies on following the YouGov/Sun tracking poll, published from Monday through Thursday night.

But they are only one of the eight major, active British pollsters. We hear from some of them – ICM, Ipsos Mori – only once a month, or others – ComRes, Survation, Opinium – only every few weeks. Aside from YouGov, only two other pollsters poll weekly: Ashcroft, who often creates a mini-news cycle on Monday afternoon, and Populus, who poll on Monday and Friday mornings.

If you pay attention to YouGov’s daily tracker polls you can write a new headline almost every day. The real story is the trend across all eight pollsters over time. May2015‘s Poll of Polls is keeping a track of all the numbers each day. We like to keep an eye on our rolling four-day average:

If we just looked at the daily averages, we see a more muddled picture - especially in mid-week, when just YouGov are polling.

Daily polls become important over time. Or they can mean something if a number of pollsters show the same sudden shift, as Ashcroft, Populus and YouGov did on Monday, when all three put Labour ahead by at least 4 points. But that seems to have been about a post-Rochester Tory-to-Ukip swing, rather than any lasting change; Labour's vote share never really changed, and the Tories have now "recovered", at least in YouGov's numbers.

Polls are truly informative over months and years.

And while a four-day average is at least something of a trend, polls are truly informative over months and years, rather than days and weeks. Exploring the polls over the last 44 years - as you can do here on May2015, focusing in on any week or month since August 1970 - tells the story of post-1960s British political history.

Click through to track the rise and fall of the SNP, who led the polls for three months in late 1981, or the Blair and Brown years, and the Tories' long, slow, limited recovery since 1997.

Harry Lambert was the editor of May2015, the New Statesman's election website.

Photo: Getty
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The rise of the green mayor – Sadiq Khan and the politics of clean energy

At an event at Tate Modern, Sadiq Khan pledged to clean up London's act.

On Thursday night, deep in the bowls of Tate Modern’s turbine hall, London Mayor Sadiq Khan renewed his promise to make the capital a world leader in clean energy and air. Yet his focus was as much on people as power plants – in particular, the need for local authorities to lead where central governments will not.

Khan was there to introduce the screening of a new documentary, From the Ashes, about the demise of the American coal industry. As he noted, Britain continues to battle against the legacy of fossil fuels: “In London today we burn very little coal but we are facing new air pollution challenges brought about for different reasons." 

At a time when the world's leaders are struggling to keep international agreements on climate change afloat, what can mayors do? Khan has pledged to buy only hybrid and zero-emissions buses from next year, and is working towards London becoming a zero carbon city.

Khan has, of course, also gained heroic status for being a bête noire of climate-change-denier-in-chief Donald Trump. On the US president's withdrawal from the Paris Agreement, Khan quipped: “If only he had withdrawn from Twitter.” He had more favourable things to say about the former mayor of New York and climate change activist Michael Bloomberg, who Khan said hailed from “the second greatest city in the world.”

Yet behind his humour was a serious point. Local authorities are having to pick up where both countries' central governments are leaving a void – in improving our air and supporting renewable technology and jobs. Most concerning of all, perhaps, is the way that interest groups representing business are slashing away at the regulations which protect public health, and claiming it as a virtue.

In the UK, documents leaked to Greenpeace’s energy desk show that a government-backed initiative considered proposals for reducing EU rules on fire-safety on the very day of the Grenfell Tower fire. The director of this Red Tape Initiative, Nick Tyrone, told the Guardian that these proposals were rejected. Yet government attempts to water down other EU regulations, such as the energy efficiency directive, still stand.

In America, this blame-game is even more highly charged. Republicans have sworn to replace what they describe as Obama’s “war on coal” with a war on regulation. “I am taking historic steps to lift the restrictions on American energy, to reverse government intrusion, and to cancel job-killing regulations,” Trump announced in March. While he has vowed “to promote clean air and clear water,” he has almost simultaneously signed an order to unravel the Clean Water Rule.

This rhetoric is hurting the very people it claims to protect: miners. From the Ashes shows the many ways that the industry harms wider public health, from water contamination, to air pollution. It also makes a strong case that the American coal industry is in terminal decline, regardless of possibile interventions from government or carbon capture.

Charities like Bloomberg can only do so much to pick up the pieces. The foundation, which helped fund the film, now not only helps support job training programs in coal communities after the Trump administration pulled their funding, but in recent weeks it also promised $15m to UN efforts to tackle climate change – again to help cover Trump's withdrawal from Paris Agreement. “I'm a bit worried about how many cards we're going to have to keep adding to the end of the film”, joked Antha Williams, a Bloomberg representative at the screening, with gallows humour.

Hope also lies with local governments and mayors. The publication of the mayor’s own environment strategy is coming “soon”. Speaking in panel discussion after the film, his deputy mayor for environment and energy, Shirley Rodrigues, described the move to a cleaner future as "an inevitable transition".

Confronting the troubled legacies of our fossil fuel past will not be easy. "We have our own experiences here of our coal mining communities being devastated by the closure of their mines," said Khan. But clean air begins with clean politics; maintaining old ways at the price of health is not one any government must pay. 

'From The Ashes' will premiere on National Geograhpic in the United Kingdom at 9pm on Tuesday, June 27th.

India Bourke is an environment writer and editorial assistant at the New Statesman.

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