At the party congress on 14 December 1991 in
Trenčín, the congress adopted new party constitution and decided to leave federation of
Communist Party of Czecho-Slovakia, due to disputes with the
Communist Party of Bohemia and Moravia and changing situation in the
Czech and Slovak Federative Republic. Congress reconfirmed Peter Weiss as party chairman. From 1994 to 1997, SDĽ was a member of a coalition called "
Common Choice" () that gained 10.18% (18 seats) in the Slovak parliament. They did not form a part of the government. Since the 2002 elections, it has had no seat in the Slovak legislature. It was a member of the
Party of European Socialists and the
Socialist International. On 4 December 2004, the party membership voted to merge with
Direction – Social Democracy from 1 January 2005. The latter party had broken off from the SDL five years earlier. == Election results ==