Socialist Democracy Party (Sosyalist Demokrasi Partisi, SDP) is a socialist party in Turkey. Most of its members were formerly in an opposition grouping within ÖDP, named Sosyalist Eylem Platformu (Socialist Action Platform). They defended closer ties with pro-Kurdish DEHAP and radical left and campaigned against privatisation and European Union membership. Their views were seen "too conservative" by most ÖDP affiliates and they left the party in 2001.The SDP was founded in 2002.