The Liberal Democrats (often referred to as the Lib Dems) are a liberal political party in the United Kingdom.
The party was formed in 1988 as a merger of the Liberal Party and the Social Democratic Party (SDP), a splinter group from the Labour Party. The two parties had formed the SDP–Liberal Alliance for the previous seven years.
At the 2010 general election, led by Nick Clegg, the Liberal Democrats won 57 seats, making them the third-largest party in the House of Commons, behind the Conservatives with 306 and Labour with 258. With no party having an overall majority, the Lib Dems agreed to join a coalition government with the Conservatives, with Clegg becoming Deputy Prime Minister and other party members taking up ministerial positions. At the 2015 general election, the party was reduced to eight MPs (which later became nine, following the Richmond Park by-election). Consequently, Clegg resigned as leader and was replaced by Tim Farron, who was elected in the leadership election. Wikipedia