If successful, it will lift what the new leaders say is the state's heavy hand on public life, restricting its reach into schools and hospitals, slashing welfare benefits and reviewing intrusive law-and-order Labour programs that have alarmed advocates for civil liberties.
Examples of leading series include published data for new business orders, labour productivity, consumer demand, residential building contracts, stock market indices, and changes in business inventory.
Within hours Peretz ordered Labour ministers to desert the coalition; three days later Sharon dropped his own bombshell, announcing the creation of what was to become Kadima.
It makes no mention of the government's controversial move to limit child tax credit to two children per family and Ms Harman has ordered Labour MPs to abstain on the vote if her amendment fails.
Twenty‑four hours later, he will face his first possible rebellion as leader, after ordering Labour MPs to abstain on a vote against Trident – despite it being official party policy to renew Britain's nuclear deterrent.
Earlier this year, Corbyn flipped to the other side, ordering Labour M.P.s to support the bill giving May authority to trigger Article 50 of the European Treaty, which countries are obliged to invoke if they want to leave the E.U.
Notably, when Cameron was at risk of suffering a more substantial defeat over the question of having a referendum on membership of the EU, Miliband rode to the rescue and ordered Labour MPs to support the government.
In an attack in effect aimed at the former Labour leader Ed Miliband, who ordered Labour MPs to vote against military action in 2013, Osborne said: "I have to say the whole concept of an emergency debate suggests that somehow this tragedy has come upon us out of the blue and indeed it has an almost natural element to it.
If you look at the figures, in reality, it's a tall order for Labour.
In order that Labour can win again, we need to understand the crises with which the Conservatives are struggling and to adapt our strategies accordingly.
