Brighton Pavilion (UK Parliament constituency) Labour Party began service as MP for thirteen years by winning the two subsequent elections. The Conservatives' share of the vote has declined at every election there since 1979. In July 2007, the Green Party selected Caroline Lucas to contest the seat, at which point she was neither Leader nor Principal Speaker for the party. In November 2009, Charlotte Vere was selected as the Conservative Party candidate at an open primary attended by local Conservative Party members and residents. In January 2010, the Liberal Democrats also selected a female candidate, Bernadette Millam. Labour had selected Nancy Platts, a local campaigner
Brighton Pavilion (UK Parliament constituency) and former union worker, as their candidate in June 2007. This meant that, distinctively, all of the four leading parties in the constituency had female candidates. In 2010, Labour's share of the vote fell by 6.5%, and Lucas, by then leading the Green Party, won the seat. In contrast to national results, the Conservative and Liberal Democrat share of the vote fell. Lucas retained the seat for the Green Party at the 2015 general election with an increased majority. Purna Sen, who held senior roles at the Commonwealth, LSE and Amnesty International, was selected to contest the seat for Labour.