The Japanese Social Democratic Party (JSDP) is a political party in Japan that advocates for social democracy and progressive policies. Founded in 1945, it emerged from the post-World War II political landscape, aiming to promote social justice, equality, and welfare programs. The party has historically supported labor rights and environmental issues. Throughout its history, the JSDP has faced challenges, including declining electoral support and competition from other parties like the Democratic Party of Japan and the Liberal Democratic Party. Despite these challenges, the JSDP continues to participate in Japanese politics, focusing on issues such as social welfare and human rights.