2012 London mayoral election

2012 London mayoral election

← 2008 3 May 2012 2016 →
Turnout	38.1% 7.2 pp
Candidate Boris Johnson Ken Livingstone Party Conservative Labour First Round 971,931 889,918 Percentage 44.0% 40.3% Swing 0.4pp 2.9pp Second Round 1,054,811 992,273 Percentage 51.5% 48.5% Swing 1.7pp 1.7pp
Result of voting by London borough. Blue boroughs are those with most votes for Boris Johnson and red those for Ken Livingstone
Mayor before election Boris Johnson Conservative Elected Mayor Boris Johnson Conservative

The 2012 London mayoral election was an election held on Thursday 3 May 2012, to elect the Mayor of London. It was held on the same day as the London Assembly election, and used a supplementary vote system.

The election was won by the incumbent mayor Boris Johnson of the Conservative Party, who was seeking re-election for a second term as Mayor. Ken Livingstone, who had been Mayor between 2000 and 2008, was seeking a third, non-consecutive term as the Labour candidate. No other candidates received 5% of the vote (the threshold for retaining their deposit). As of the 2021 London mayoral election, this was the last time that London voted for a Conservative Party Mayor.