Key figures: David Cameron (Conservative), Gordon Brown (Labour), Nick Clegg (Liberal Democrats), Caroline Lucas (Green Party)
Background
The 2010 general election was called against the backdrop of the deepest economic contraction in the United Kingdom since the Great Depression. The 2008 global financial crisis had pushed the UK economy into recession, and government borrowing had reached historically high levels as the Labour government deployed fiscal stimulus and bank bailouts costing hundreds of billions of pounds. Public sector net borrowing for fiscal year 2009–10 was £153 billion — approximately 11.1 percent of GDP — and public debt was projected to exceed 70 percent of GDP by 2013.
Gordon Brown had become Prime Minister in June 2007 without a general election, succeeding Tony Blair after a decade of Labour government. His government was widely credited with stabilizing the banking system through the 2008 bank recapitalization, but persistent unemployment — which reached 8.0 percent (2.5 million people) by election day — and the narrative of economic mismanagement eroded Labour’s standing. By late 2009, Conservative polling leads regularly exceeded 10 percentage points.
Campaign and the Televised Leadership Debates
The 2010 election was the first in British history to feature live televised debates between the three main party leaders, a format long resisted by incumbent governments fearing the boost it could give challengers. Three 90-minute debates were broadcast across ITV, Sky News, and BBC One on April 15, 22, and 29.
The debates transformed the campaign. Nick Clegg, widely unknown to much of the electorate at campaign-start, performed strongly in all three encounters. In snap polls conducted immediately after the first debate on April 15, Clegg was rated the winner by margins of 20–43 percentage points over his rivals depending on the pollster. The phenomenon — dubbed “Cleggmania” by the press — prompted a brief surge in Liberal Democrat polling, with some surveys showing the party reaching 30 percent support by April 19. The Daily Telegraph front page read “I Agree With Nick,” satirizing the frequency with which both Cameron and Brown deferred to Clegg’s positions during debate exchanges.
Ultimately, the Liberal Democrat surge in polling did not translate proportionally into seats under the first-past-the-post system: the party received 23.0 percent of votes but won only 57 seats (8.8 percent of the House of Commons). This outcome reignited debate about electoral reform that would later shape coalition negotiations.
Election Results
Polling took place on May 6, 2010. The UK Electoral Commission recorded:
| Party | Votes | Vote share | Seats | Change |
|---|---|---|---|---|
| Conservative | 10,706,647 | 36.1% | 306 | +97 |
| Labour | 8,606,517 | 29.0% | 258 | −91 |
| Liberal Democrats | 6,836,248 | 23.0% | 57 | −5 |
| SNP | 491,386 | 1.7% | 6 | +0 |
| Green Party | 285,612 | 1.0% | 1 | +1 |
| Others | — | 9.2% | 28 | — |
With 326 seats required for an outright majority, no party achieved a parliamentary majority. The Conservatives fell 20 seats short. A total of 29,686,011 votes were cast, representing a voter turnout of 65.1 percent — up from 61.4 percent in 2005.
The Green Party’s Caroline Lucas won Brighton Pavilion with 31.3 percent of the vote, becoming the first Green MP elected to the House of Commons in the party’s history. A record 228 new MPs were elected, including the youngest MP at the time, Pamela Nash (Labour, Airdrie and Shotts), who was 25 years old.
Coalition Negotiations and Government Formation
Following the election result, Gordon Brown remained in Downing Street as caretaker Prime Minister while negotiations took place over five days. Constitutional convention in the event of a hung parliament held that the incumbent PM retained the right to first attempt to form a government.
Brown’s Labour Party initially explored a “rainbow coalition” arrangement with the Liberal Democrats and smaller parties, but the parliamentary arithmetic was unfavorable and internal Labour resistance undermined the negotiations. Simultaneously, the Conservatives and Liberal Democrats conducted intensive talks across the weekend of May 8–9.
The Conservatives and Liberal Democrats reached agreement on a formal coalition — the first since the wartime National Government of 1940–45 — on May 11, 2010. The coalition agreement covered 36 policy areas, including:
- A fixed-term five-year parliament (enacted as the Fixed-term Parliaments Act 2011)
- A referendum on the Alternative Vote electoral system (held May 2011, rejected 68% to 32%)
- A deficit reduction plan combining spending cuts and selected tax rises
- An increase in the personal income tax threshold to £10,000 (phased in by 2014)
- Commitments on civil liberties and scrapping identity cards
Gordon Brown resigned as Prime Minister and Labour leader at 7:00 p.m. on May 11, 2010, giving a farewell statement outside No. 10 Downing Street with his wife and children. David Cameron entered Downing Street as Prime Minister at 8:43 p.m., with Nick Clegg confirmed as Deputy Prime Minister.
Significance
The 2010 election ended 13 years of Labour government and established the first formal peacetime coalition in British history. Its importance radiated across multiple dimensions:
Electoral reform debate: The Liberal Democrats extracted a referendum on the Alternative Vote system as a coalition condition. Though the May 2011 referendum rejected AV decisively (67.9% to 32.1%), the episode brought electoral reform into mainstream political discourse and revived arguments that would resurface repeatedly over the following decade.
Austerity politics: The coalition government’s subsequent programme of public spending reductions — Chancellor George Osborne’s “austerity” agenda — defined British politics from 2010 to 2015 and beyond. Real wages stagnated, public services contracted, and the political backlash contributed to the rise of Jeremy Corbyn’s Labour leadership in 2015 and ultimately to the conditions that produced the Brexit vote in 2016. The austerity response paralleled similar fiscal contraction across the eurozone: see European sovereign debt crisis.
Televised debates as permanent format: The 2010 debates established a precedent that could not easily be reversed. All subsequent UK general elections featured leader debates, fundamentally altering how parties organized campaigns and how voters encountered political leaders.
Green Party breakthrough: Caroline Lucas’s victory in Brighton Pavilion ended the Green Party’s decades-long exclusion from Westminster, giving environmentalism a direct voice in Parliament. Lucas remained an MP through subsequent elections.
Historic firsts: The election was the first in which candidates as young as 18 could stand (minimum candidacy age was lowered from 21 in 2006). The record 228 new MPs included significantly more women (143, up from 128) and ethnic-minority MPs (27, up from 15) than any previous Parliament.
The 2010 election took place during a broader political moment of center-right gains across Western democracies in the wake of the financial crisis — a parallel to the 2010 US midterm elections seven months later, where Republican gains and Tea Party energy reshaped American politics. Both elections reflected public discontent with incumbent governments that had presided over economic crisis.