It was formed in 1997 and led by
Vojislav Stanimirović. In the
2003 Croatian parliamentary election, it beat its main rival, the
Serb People's Party (SNS), taking all three seats reserved for Serb representatives in the Croatian parliament. After the elections, the Independent Democratic Serb Party made an agreement with the winning
Croatian Democratic Union led by
Ivo Sanader in which they agreed on fulfilling several Independent Democratic Serb Party demands such as refugee return, strengthening of national equality, judicial reform and cooperation with neighbouring countries. In the
2007 Croatian parliamentary election, they retained their three seats in the Parliament of Croatia. In the
Cabinet of Ivo Sanader II, their member
Slobodan Uzelac received the position of vice-president of government. In the
2011 Croatian parliamentary election, they again won all three seats for Serb minority lists in the Parliament. In the 2015 and 2016 Croatian parliamentary elections, the SDSS also held all of 3 Serb national minority seats in the Croatian Parliament, continuing to support the
HDZ-led government of Croatia. The party participated in
2019 European Parliament election in Croatia, winning 2.66% of votes. After the
2020 parliamentary election, SDSS member
Boris Milošević received the position of
Deputy Prime Minister of Croatia, in charge of social affairs and human and minority rights, within the
Second Cabinet of
Andrej Plenković, representing national minorities in Croatia. == Electoral performances ==