The Democratic Left Alliance (Polish: Sojusz Lewicy Demokratycznej) was a social-democratic political party in Poland. It was formed in 9 July 1991 as an electoral alliance of centre-left parties, and became a single party on 15 April 1999. It was the major coalition party in Poland between 1993 and 1997, and between 2001 and 2005, from which came four Prime ministers: Józef Oleksy, Włodzimierz Cimoszewicz, Leszek Miller and Marek Belka. It then faded into opposition, shadowed by the rise of Civic Platform and Law and Justice.