The London Assembly election of 2012 was an election of members to the London Assembly which took place on Thursday, 3 May 2012, the same day as the London mayoral election, 2012, and the United Kingdom local elections, 2012.
The Assembly is elected by the Additional Member System. There are fourteen directly elected constituencies, all of which have, to date, only ever been won by the Conservative Party or the Labour Party. An additional eleven members are allocated by a London wide top-up vote with the proviso that parties must win at least five percent of the vote to qualify for the list seats.
More information on the Wikipedia page .