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
Green Party of England and Wales of the London Assembly. Brighton Pavilion was the Green Party's first and only parliamentary seat to date, won at the 2010 general election and held in 2015 and 2017. As with other small parties, representation at the House of Commons has been hindered by the first-past-the-post voting system. The party's first life peer was Baron Beaumont of Whitley, who left the Liberal Democrats and joined the Green Party in 1999. He sat as a Green until his death in 2008. As of December 2015, Baroness Jones of Moulsecoomb is their only representative in the House of Lords. Since the first