SDP-Liberal Alliance

electoral alliance in the United Kingdom

The S.D.P-Liberal Alliance was an alliance between the Social Democratic Party (S.D.P) and the Liberal Party. The two British political parties promised to help each other in order to try to win the 1983 and 1987 UK general elections. The alliance won around a quarter of the vote each time. In 1988, the two parties decided to join together to form the Liberal Democrats.[source?]