Social Democratic Party or 'SDP' for short was a centre-left political party in Sakaria. In 2020, it was split into the new Social Democrats of Sakaria and the Sakarian Labour Party
1989-1995[]
1995-1999[]
1999-2015[]
2015-2019[]
2019-2020[]
Due to internal conflicts inside the party, the SDP was split into 'Social Democrats of Sakaria' and the new 'Labour Party'.