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) as well as Nancy Faeser (2023).