Career in local politics Since 1975 Mende has been a member of the SPD and since 1972 an honorary member of the Worker's Welfare Association (
Arbeiterwohlfahrt). From 1999 to 2003 Mende was the leader of the SPD party in the
State Parliament of Lower Saxony. From 2003 to 2008 Mende was the divisional head (
Referatsleiter) of the Lower Saxon Ministry for Home Affairs, Sport and Integration. There he worked for five years in the area of administrative modernisation and then in the field of integration. From 22 February 2009 Mende served as the Lord Mayor (
Oberbürgermeister) of the town of Celle in Lower Saxony, having won at the first vote with a clear and "surprising" majority of 50.8%. He has been elected for a term of office lasting to 2017. Mende lost the 2016 elections against his
CDU opponent Jörg Nigge. Therefore, his regular period in office ended in February 2017.
Member of the German Parliament, 2023–present In the
2021 German federal election, Mende contested
Celle – Uelzen but came second. In 2023, he moved up the list after
Andreas Philippi resigned. He has since been serving on the Health Committee. ==Other activities==