 He served in this capacity between 1905 and his death in 1916.At the same time he continued to serve as chairman of the party in Cologne and as a member of the party regional exectutive committee for the upper Rhine Province.Following nearly 20 years of standing as a Reichstag candidate in various electoral districts in Cologne, Koblenz and Trier, in 1912 Adolf Hofrichter became "the first Social Democrat in Cologne elected to the Reichstag".