On 30 November 2017, the party underwent their second leadership election as its leader, Daniel Feetham, resigned in July. As a result, 60.6% of the votes (from executives and members of the party) had gone to support rejoined GSD member, Keith Azopardi, who was a minister and Deputy Chief Minister under the first few years of Peter Caruana's run as Chief Minister. Azopardi had beaten interim leader Roy Clinton, who had gained 39.4% of the votes.
History
The party emerged, after the collapse of the Association for the Advancement of Civil Rights, as the main opposition to the Gibraltar Socialist Labour Party (GSLP). The GSD was founded in 1989 by former AACR MP, Peter Montegriffo. When Peter Montegriffo resigned his Parliamentary seat in 1991, Peter Caruana who had become Party Leader won that contested bye-election against the then main opposition Party, the AACR. In 1996 the GSD managed to overturn a massive majority that the then GSLP Government had obtained at the previous 1992 general election and were elected to Government. The first GSD administration was made up of Peter Caruana [as Chief Minister], Peter Montegriffo [as Deputy Chief Minister], Ernest Britto, Hubert Corby, Keith Azopardi, Joe Holliday, Bernard Linares and Jaime Netto.
In 2005, the GSD merged with the Gibraltar Labour Party, retaining the GSD name for the enlarged party. The merger was unpopular with many members of both parties, causing some high-profile GSD members to resign their membership, including deputy leader Keith Azopardi and executive member Nick Cruz, who went on to form the short-lived Progressive Democratic Party.
In January 2013, Peter Caruana (who was the then Leader of the Opposition), announced he was stepping down as leader and taking up a backbench position until his 4-year term was over. Caruana declared that he would not fight the next election and will be stepping out of politics completely. The leadership was contested by two GSD MPs: Daniel Feetham and Damon Bossino. Feetham was elected on 4 February 2013 as Leader of the party by majority vote of the executive. This was the first time a party's leadership was to be democratically contested between two candidates.
In the 1991 by-election to the Gibraltar House of Assembly, following the resignation of GSD Leader Peter Montegriffo, Peter Caruana was elected party leader and won 61.81% of the popular vote to fill in the vacant seat.[8]
In the 1992 election, the party won 20.20% of the popular vote and 7 seats.[9]
In the 1996 election, the party won 52.20% of the popular vote and 8 seats.[10]
In the 2000 election, the party won 58.35% of the popular vote and 8 seats.[11]
In the 2003 election, the party won 51.45% of the popular vote and 8 seats.[12]
In the 2019 election, the party won 25.60% of the popular vote and 6 seats.
In the 2023 election, the party won 48.15% of the popular vote and 8 seats
After the General Elections, there was the party’s leadership elections between the incumbent Party and Opposition Leader, Keith Azopardi and his colleague, Damon Bossino, who was appointed Shadow Minister for Housing, Lands & Transport. The former identifies himself as a centrist and progressive GSD MP whilst the latter identifies as a more conservative figure. On December, the results were in favour of Azopardi with 58% compared to his opponent with 42%.
Gibraltar was part of the South West England constituency in the European parliament and its major parties formed joint ticket alliances with the major UK parties. From 2004 until Brexit, the Gibraltar Social Democrats were in an alliance with the Conservatives.