The guests were Federal Ministers Olaf Scholz and Brigitte Zypries (2008), Karl-Theodor zu Guttenberg, Thomas de Maizière and Franz-Josef Jung (2009), Dr. Norbert Röttgen (2010), Ilse Aigner and Ronald Pofalla (2011), Dr. Wolfgang Schäuble and Dr. Guido Westerwelle (2012), Sabine Leutheusser-Schnarrenberger (2013), Peter Altmaier, Prof. Johanna Wanka (2014), Dr. Barbara Hendricks (2015/2016), Katarina Barley, Svenja Schulze and Gerd Müller (2018), Dr. Franziska Giffey (2019), Olaf Scholz (2020), Anja Karliczek (2021), Nancy Faeser (2023), as well as Klara Geywitz, Prof. Karl Lauterbach and Claudia Roth (2024).