Bündnis Zukunft Österreich
On 5 July 2012, Werthmann joined the liberal group of the European Parliament. The Liberal Forum had planned on running for the European elections in 2014 with Werthmann as leading candidate. On 27 March, it was announced that Werthmann would candidate independently for the Alliance for the Future of Austria during European elections 2014 and consequently, she was excluded from the ALDE group. In turn, DDr. Ulrike Haider-Quercia stepped back from her top candidature and Werthmann stepped up and took her place as leading candidate for the independent "List Mag. Werthmann". However, the Alliance for the Future of Austria was not re-elected into parliament during European elections held on the 25 May 2014.