Aschenberg-Dugnus has been a member of the FDP since 1997. Aschenberg-Dugnus was a member of the German Bundestag from 2009 to 2013, representing the Rendsburg-Eckernförde district. During that time, she served on the Health Committee and the Committee on Legal Affairs. In the
2017 elections, Aschenberg-Dugnus returned to the Bundestag. She served on the Health Committee. From March 2018, she was her parliamentary group's health policy spokesperson. Since 2019, she has also been a member of the German delegation to the
Franco-German Parliamentary Assembly. In the negotiations to form a so-called
traffic light coalition of the
Social Democrats (SPD), the
Green Party and the FDP following the
2021 federal elections, Aschenberg-Dugnus led her party's delegation in the working group on health policy; her co-chairs from the other parties were
Katja Pähle and
Maria Klein-Schmeink. In early 2024, Aschenberg-Dugnus announced that she would not stand in the
2025 federal elections but instead resign from active politics by the end of the parliamentary term. ==Other activities==