In May 2016, the state representative assembly of the Schleswig-Holstein FDP elected Jensen to fourth place in the list for the
2017 federal elections. Jensen won the election against former member of the Bundestag, Sebastian Blumenthal. In the election, the FDP won three seats in the state of Schleswig-Holstein with 12.6 percent of the second votes. When Bernd Klaus Buchholz, second on the list, resigned his candidacy to become Schleswig-Holstein's State Minister for Economic Affairs, Jensen took his place. At the time of her election in 2017, Jensen was the youngest female member of parliament. From 2018 until 2021, she served as chairwoman of
Committee on Human Rights and Humanitarian Aid, making her the youngest chair of a committee in the history of the Bundestag. In addition to her role in parliament, Jensen served as member of the German delegation to the
Parliamentary Assembly of the Council of Europe since 2018. As member of the FDP, she was part of the
Alliance of Liberals and Democrats for Europe group. She served on the Committee on Equality and Non-Discrimination, the Committee on Legal Affairs and Human Rights, and the Sub-Committee on Human Right. In the negotiations to form a so-called
traffic light coalition of the
Social Democratic Party (SPD), the
Green Party and the FDP following the
2021 federal elections, Jensen was part of her party's delegation in the working group on foreign policy, defence, development cooperation and human rights, co-chaired by
Heiko Maas,
Omid Nouripour and
Alexander Graf Lambsdorff. From 2021 to 2025, Jensen served as one of six deputy chairpersons of the FDP parliamentary group under the leadership of its chairman
Christian Dürr, where she oversees the group's activities on education policy. In addition to her committee assignments, Jensen was part of the German-Chinese Parliamentary Friendship Group. She was also part of the
Inter-Parliamentary Alliance on China. ==Other activities==