ドイツ社会主義労働者党
After a hiatus of four years, Hasenclever was once again elected to the Reichstag (which had become the Reichstag of the German Empire), this time representing Altona. Since then, the positions of the ADAV and the SDAP increasingly converged. On a joint party meeting on 5 May 1875 in Gotha, the two parties finally merged, forming the Socialist Workers' Party of Germany ("Sozialistische Arbeiterpartei Deutschlands", SAP).