The constituency was created in 1950 from the former two-member constituency of
Brighton (one of the last remaining multi-member constituencies), for which Brighton Pavilion's first Member of Parliament,
Sir William Teeling, had previously been the joint representative. From 1950 to 1997, the seat elected
Conservative MPs. In 1997,
David Lepper of the
Labour Party, aided by somewhat notionally favourable minor boundary changes before the 1997 general election, 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 a
Member of the European Parliament for the
South East England constituency. 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 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, 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. Clarence Mitchell, a former
BBC News reporter and spokesman for the family of
Madeleine McCann, was selected as the Conservative Party candidate. For the
2017 general election and the
2019 general election, the local Liberal Democrat party chose not to field a candidate in the seat, endorsing Lucas instead due to their shared pro-EU stance. Lucas retained Brighton Pavilion for the Green Party, which was returned with the biggest numerical majority for any candidate in the seat since
1959. In the 2019 election, the seat had the largest winning margin and the highest winning vote share of any seat not held by the Conservatives or Labour. Lucas announced on 8 June 2023, that she would not be standing in the subsequent UK general election. On 19 July 2023, the Green Party picked
Siân Berry to replace her. Berry was elected as the MP for Brighton Pavilion at the
2024 election with a slightly reduced majority of 27%. ==Members of Parliament==