History of the Green Party of England and Wales of Deputy Leader. The Green Party fielded more than 300 candidates for the 2010 general election. Caroline Lucas became the first Green candidate to gain a seat in Westminster, after being elected MP for Brighton Pavilion by a margin of 1,252 votes. The following week 600 new members had joined the Green Party bringing total membership to over 11,000. In previous years 600 new members was high for a whole year. On 24 May 2012, the six Green Party councillors elected to Stroud District Council formed a power sharing administration (a "constructive cooperation") with both the Labour Party and the
Leader of the Labour Party (UK) the Deputy Leader of the Labour Party, and was elected on the same day. Corbyn's leadership was challenged in mid-2016, but he was re-elected in the subsequent leadership election. The post of Leader of the Labour Party was officially created in 1922. Before this, between when Labour MPs were first elected in 1906 and the general election in 1922, when substantial gains were made, the post was known as Chairman of the Parliamentary Labour Party. In 1970, the positions of Leader of the Labour Party and Chairman of the Parliamentary Labour Party were permanently separated. In 1921, J. R. Clynes