Mrs. Gabriele Klingmüller worked as a teacher prior to her retirement. She joined the Social Democratic Party in 1978, holding a number of functions at local level. She became member of the City Council of the City of Bonn in 2009, chairing the committee for civic participation and working in the committees for scientific affairs, environment and consumer protection. In 2014, Mrs. Klingmüller was appointed Deputy Mayor of Bonn.