The General German Workers' Association, a precursor of the modern Social Democratic Party of Germany, is founded in Leipzig, Kingdom of Saxony.

The General German Workers' Association was a German political party founded on 23 May 1863 in Leipzig, Kingdom of Saxony by Ferdinand Lassalle. It was the first organized mass working-class party in history.

The Social Democratic Party of Germany is a social democratic political party in Germany. It is one of the major parties of contemporary Germany. Lars Klingbeil has been the party's leader since the 2021 SPD federal Party convention together with Bärbel Bas, who joined him in June 2025. After losing the 2025 federal election, the party is part of the Merz government as the junior coalition partner. The SPD is a member of 12 of the 16 German state governments and is a leading partner in seven of them.

Leipzig is the most populous city in the German state of Saxony. The city has a population of 628,718 inhabitants as of 2023. It is the eighth-largest city in Germany and is part of the Central German Metropolitan Region. The name of the city is usually interpreted as a Slavic term meaning place of linden trees, in line with many other Slavic placenames in the region.

The Kingdom of Saxony was a German monarchy in Central Europe between 1806 and 1918, the successor of the Electorate of Saxony. It joined the Confederation of the Rhine after the dissolution of the Holy Roman Empire, later joining the German Confederation after Napoleon was defeated in 1815. From 1871, it was part of the German Empire. It became a free state of the Weimar Republic in 1918 after the end of World War I and the abdication of King Frederick Augustus III. Its capital was Dresden, and its modern successor is the Free State of Saxony.