Deputy Leader of the Labour Party (UK) of the Party until a new leader is elected. If a vacancy in the leadership occurs while the Labour Party is in government, then the Cabinet, in consultation with the National Executive Committee of the Labour Party, chooses a new leader, who serves until a new leader is elected. To date, the only Deputy Leaders who have gone on to become the elected leader of the Labour Party are Clement Attlee and Michael Foot. Margaret Beckett briefly served as Labour leader following the unexpected death of John Smith in 1994. Harriet Harman was leader after Gordon Brown resigned in 2010
John Smith (Labour Party leader) in Opposition to Margaret Thatcher's Conservative government, he rose through the Shadow Cabinet, serving as Shadow Secretary of State for Trade (1979–1982), Shadow Secretary of State for Energy (1982–1983), Shadow Secretary of State for Employment (1983–1984), Shadow Secretary of State for Trade and Industry (1984–1987) and Shadow Chancellor of the Exchequer (1987–1992). After Labour leader Neil Kinnock resigned following the Party's surprise loss in the 1992 general election to new Conservative leader John Major, Smith was elected his successor in July 1992. He continued Kinnock's moves to reform Labour, abolishing the trade union block vote at Labour party conferences and