How would the Tories get rid of Cameron?

What the Conservative rule book says about a vote of no confidence and a leadership election.

Tory MP David Ruffley broke cover at the weekend to warn David Cameron that his leadership would be at risk if the Conservatives performed poorly in next year's European elections. He told Sky News's Murnaghan programme: "I think next May's Euro elections might put pressure on him to go harder because there is a lot of speculation in and around Downing Street, so I am led to believe, that Ukip might come first.

"Now if that happens next May there'll be 12 months before the election and some of our colleagues in marginal seats might get a bit windy. I don't think UKIP are going to win seats but they could split the Conservative vote if they are strong and let Labour through in those marginal seats."

Over at the Telegraph, Benedict Brogan suggests that the threat of a putsch is real, reporting that the Conservative whips believe "there is a hard core of about 30 irreconcilables who will do anything to bring down Dave". 

So how would Ruffley and his colleagues go about the putative regicide? Under current Conservative rules, a vote of no confidence is triggered when at least 15 per cent of Tory MPs ("in receipt of the Conservative whip") write to the chairman of the backbench 1922 Committee (currently Graham Brady) requesting one. This can be done either collectively or separately and the names of the signatories are not disclosed. With 305 sitting Conservative MPs, 46 signatures would be required for a vote to be held. Once this threshold has been met, the chairman in consultation with the leader then determines the date of such a vote "as soon as possible in the circumstances prevailing". 

If the leader wins the support of a simply majority in the vote, they remain leader and no further vote can be held for 12 months from the date of the ballot. If they lose the vote (again, on a simple majority basis), they must resign and may not stand in the leadership election that then follows. Unlike in 1989, when Tory backbencher Anthony Meyer stood against Margaret Thatcher, no "stalking horse" candidate is required to oust the leader. While Cameron would easily win any vote, he would be damaged if a significant minority of MPs either voted against him or abstained. In 1989, Thatcher defeated Meyer by 314 votes to 33, but once spoilt ballots and abstentions were included, it emerged that 60 MPs - 16 per cent of the parliamentary party - had failed to support her. In Meyer's words, people then "started to think the unthinkable". 

Under the current Conservative leadership election rules, adopted in 1998, if there is only one valid nomination, that person is elected. If there are two, both candidates go forward to a vote of the party membership. If there are three or more, a ballot is held within the parliamentary party to determine the two who go forward to the membership. 

In 2005, in the final act of his leadership, Michael Howard attempted to change the rules in order to give MPs, rather than party members, the final say. The move was prompted by the 2001 leadership election, which saw the popular Ken Clarke win the MPs' vote but Iain Duncan Smith trump him in the members' ballot. Unsurprisingly, after Duncan Smith's calamitous time as leader, most felt a Clarke victory would have served the party better. But Howard's proposals failed to win the two-thirds majority required, with only 58 per cent of activists endorsing them (although 71 per cent of MPs did), and the status quo prevailed.  

David Cameron on holiday in Ibiza, Spain. Photograph: Getty Images.

George Eaton is political editor of the New Statesman.

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Inside Big Ben: why the world’s most famous clock will soon lose its bong

Every now and then, even the most famous of clocks need a bit of care.

London is soon going to lose one of its most familiar sounds when the world-famous Big Ben falls silent for repairs. The “bonging” chimes that have marked the passing of time for Londoners since 1859 will fall silent for months beginning in 2017 as part of a three-year £29m conservation project.

Of course, “Big Ben” is the nickname of the Great Bell and the bell itself is not in bad shape – even though it does have a huge crack in it.

The bell weighs nearly 14 tonnes and it cracked in 1859 when it was first bonged with a hammer that was way too heavy.

The crack was never repaired. Instead the bell was rotated one eighth of a turn and a lighter (200kg) hammer was installed. The cracked bell has a characteristic sound which we have all grown to love.

Big Ben strikes. UK Parliament.

Instead, it is the Elizabeth Tower (1859) and the clock mechanism (1854), designed by Denison and Airy, that need attention.

Any building or machine needs regular maintenance – we paint our doors and windows when they need it and we repair or replace our cars quite routinely. It is convenient to choose a day when we’re out of the house to paint the doors, or when we don’t need the car to repair the brakes. But a clock just doesn’t stop – especially not a clock as iconic as the Great Clock at the Palace of Westminster.

Repairs to the tower are long overdue. There is corrosion damage to the cast iron roof and to the belfry structure which keeps the bells in place. There is water damage to the masonry and condensation problems will be addressed, too. There are plumbing and electrical works to be done for a lift to be installed in one of the ventilation shafts, toilet facilities and the fitting of low-energy lighting.

Marvel of engineering

The clock mechanism itself is remarkable. In its 162-year history it has only had one major breakdown. In 1976 the speed regulator for the chimes broke and the mechanism sped up to destruction. The resulting damage took months to repair.

The weights that drive the clock are, like the bells and hammers, unimaginably huge. The “drive train” that keeps the pendulum swinging and that turns the hands is driven by a weight of about 100kg. Two other weights that ring the bells are each over a tonne. If any of these weights falls out of control (as in the 1976 incident), they could do a lot of damage.

The pendulum suspension spring is especially critical because it holds up the huge pendulum bob which weighs 321kg. The swinging pendulum releases the “escapement” every two seconds which then turns the hands on the clock’s four faces. If you look very closely, you will see that the minute hand doesn’t move smoothly but it sits still most of the time, only moving on each tick by 1.5cm.

The pendulum swings back and forth 21,600 times a day. That’s nearly 8m times a year, bending the pendulum spring. Like any metal, it has the potential to suffer from fatigue. The pendulum needs to be lifted out of the clock so that the spring can be closely inspected.

The clock derives its remarkable accuracy in part from the temperature compensation which is built into the construction of the pendulum. This was yet another of John Harrison’s genius ideas (you probably know him from longitude fame). He came up with the solution of using metals of differing temperature expansion coefficient so that the pendulum doesn’t change in length as the temperature changes with the seasons.

In the Westminster clock, the pendulum shaft is made of concentric tubes of steel and zinc. A similar construction is described for the clock in Trinity College Cambridge and near perfect temperature compensation can be achieved. But zinc is a ductile metal and the tube deforms with time under the heavy load of the 321kg pendulum bob. This “creeping” will cause the temperature compensation to jam up and become less effective.

So stopping the clock will also be a good opportunity to dismantle the pendulum completely and to check that the zinc tube is sliding freely. This in itself is a few days' work.

What makes it tick

But the truly clever bit of this clock is the escapement. All clocks have one - it’s what makes the clock tick, quite literally. Denison developed his new gravity escapement especially for the Westminster clock. It decouples the driving force of the falling weight from the periodic force that maintains the motion of the pendulum. To this day, the best tower clocks in England use the gravity escapement leading to remarkable accuracy – better even than that of your quartz crystal wrist watch.

In Denison’s gravity escapement, the “tick” is the impact of the “legs” of the escapement colliding with hardened steel seats. Each collision causes microscopic damage which, accumulated over millions of collisions per year, causes wear and tear affecting the accuracy of the clock. It is impossible to inspect the escapement without stopping the clock. Part of the maintenance proposed during this stoppage is a thorough overhaul of the escapement and the other workings of the clock.

The Westminster clock is a remarkable icon for London and for England. For more than 150 years it has reminded us of each hour, tirelessly. That’s what I love about clocks – they seem to carry on without a fuss. But every now and then even the most famous of clocks need a bit of care. After this period of pampering, “Big Ben” ought to be set for another 100 or so years of trouble-free running.

The Conversation

Hugh Hunt is a Reader in Engineering Dynamics and Vibration at the University of Cambridge.

This article was originally published on The Conversation. Read the original article.