The United Kingdom is a constitutional monarchy which, by legislation and convention, operates as a unitary parliamentary democracy. A hereditary monarch, currently King Charles III, serves as head of state while the Prime Minister of the United Kingdom, currently Sir Keir Starmer since 2024, serves as the elected head of government.
The 2004 European Parliament election was the United Kingdom's part of the wider 2004 European Parliament election which was held between 10 and 13 June 2004 in the 25 member states of the European Union. The United Kingdom's part of this election was held on Thursday 10 June 2004. The election also coincided with the 2004 local elections and the London Assembly and mayoral elections. In total, 78 Members of the European Parliament were elected from the United Kingdom using proportional representation.
The 2005 United Kingdom general election was held on Thursday 5 May 2005, to elect 646 members to the House of Commons. The governing Labour Party led by the prime minister Tony Blair won its third consecutive victory, with Blair becoming the second Labour leader after Harold Wilson to form three majority governments. However, its majority fell to 66 seats; the majority it won four years earlier had been of 167 seats.
The 2010 United Kingdom general election was held on Thursday 6 May 2010, to elect Members of Parliament to the House of Commons. The election took place in 650 constituencies across the United Kingdom under the first-past-the-post system. The election resulted in a large swing to the opposition Conservative Party led by David Cameron similar to that seen in 1979, the last time a Conservative opposition had ousted a Labour government. The governing Labour Party led by the prime minister Gordon Brown lost the 66-seat majority it had previously enjoyed, but no party achieved the 326 seats needed for a majority. The Conservatives won the most votes and seats, but still fell 20 seats short. This resulted in a hung parliament where no party was able to command a majority in the House of Commons. This was only the second general election since the Second World War to return a hung parliament, the first being the February 1974 election. This election marked the start of Conservative government for the next 14 years.
The 2007 Northern Ireland Assembly election was held on Wednesday, 7 March 2007. It was the third election to take place since the devolved assembly was established in 1998. The election saw endorsement of the St Andrews Agreement and the two largest parties, the Democratic Unionist Party (DUP) and Sinn Féin, along with the Alliance Party, increase their support, with falls in support for the Ulster Unionist Party (UUP) and the Social Democratic and Labour Party (SDLP).
The 2009 European Parliament election was the United Kingdom's component of the 2009 European Parliament election, the voting for which was held on Thursday 4 June 2009. The election was held concurrently with the 2009 local elections in England. In total, 72 Members of the European Parliament were elected from the United Kingdom using proportional representation.
This is the results breakdown of the 2005 general election.
The 2015 United Kingdom general election was held on Thursday 7 May 2015 to elect 650 Members of Parliament (MPs) to the House of Commons. It was the first of three general elections to be held under the rules of the Fixed-term Parliaments Act 2011 and was the last general election to be held before the United Kingdom voted to end its membership of the European Union (EU) in June 2016. Local elections took place in most areas of England on the same day and is to date the most recent general election to coincide with local elections. The governing Conservative Party, led by Prime Minister David Cameron, won an unexpected victory; opinion polls and political commentators had predicted that the results of the election would cause a second consecutive hung parliament whose composition would be similar to the previous Parliament, which was in effect from the previous national election in 2010. However, opinion polls underestimated the Conservatives, as they won 330 of the 650 seats and 36.9 per cent of the votes, giving them a majority of ten seats.
The 2015 United Kingdom general election in Northern Ireland was held on 7 May 2015 and all 18 seats were contested. 1,236,765 people were eligible to vote, up 67,581 from the 2010 general election. 58.45% of eligible voters turned out, an increase of half a percentage point from the last general election. This election saw the return of Ulster Unionists to the House of Commons, after they targeted 4 seats but secured 2.
The 2017 United Kingdom general election was held on Thursday 8 June 2017, two years after the previous general election in 2015; it was the first since 1992 to be held on a day that did not coincide with any local elections. The governing Conservative Party led by the prime minister Theresa May remained the largest single party in the House of Commons but lost its small overall majority, resulting in the formation of a Conservative minority government with a confidence and supply agreement with the Democratic Unionist Party (DUP) of Northern Ireland.
3,971 candidates stood in the United Kingdom general election of 2015, which was held on 7 May 2015.
The 2019 United Kingdom general election was held on Thursday, 12 December 2019, with 47,567,752 registered voters entitled to vote to elect 650 Members of Parliament (MPs) to the House of Commons. The governing Conservative Party led by the prime minister, Boris Johnson, won a landslide victory with a majority of 80 seats, a net gain of 48, on 43.6 per cent of the popular vote, the highest percentage for any party since the 1979 general election, though with a narrower popular vote margin than that achieved by the Labour Party over the Conservatives at the 1997 general election. This was the second national election to be held in 2019 in the United Kingdom, the first being the 2019 European Parliament election.
The 2019 European Parliament election was the United Kingdom's component of the 2019 European Parliament election. It was held on Thursday 23 May 2019 and the results announced on Sunday 26 and Monday 27 May 2019, after all the other EU countries had voted. This was the United Kingdom's final participation in a European Parliament election before leaving the European Union on 31 January 2020, and was also the last election to be held under the provisions of the European Parliamentary Elections Act 2002 before its repeal under the European Union (Withdrawal) Act 2018 and was the first European election in the United Kingdom to be held on a day that did not coincide with any local elections since 1999. This was the first of two national elections that would be held in the United Kingdom in 2019 with the 2019 general election being held six months later in December 2019.
The 2019 United Kingdom general election was held on 12 December 2019 to elect all 650 members of the House of Commons, including 18 seats in Northern Ireland. 1,293,971 people were eligible to vote, up 51,273 from the 2017 general election. 62.09% of eligible voters turned out, down 3.5 percentage points from the last general election. For the first time in history, nationalist parties won more seats than unionist parties.
Unite to Remain was a campaign and electoral pact during the 2019 United Kingdom general election. It involved three parties that supported remaining in the European Union: the Liberal Democrats, the Green Party of England and Wales, and, in Wales, Plaid Cymru. Its stated goal was to avoid the spoiler effect and maximise the number of MPs elected who would oppose Brexit.
2.4%) [3] 
