In the 2002 national elections, Roth was elected to the Bundestag as Bavarian lead candidate for Alliance 90/The Greens. Since then, she has been a member of the Bundestag's Committee on Foreign Affairs and the Committee on Cultural and Media Affairs. She is also cultural affairs spokesperson for the Alliance 90/The Greens parliamentary group in the Bundestag and chairperson of the German-Turkish Parliamentary Friendship Group.
