When the CDU/CSU entered into a coalition government with the center-left Social Democratic Party (SPD) on the national level following the 2013 elections, Voigt joined a group of young party members – including Günter Krings, Michael Kretschmer and Jens Spahn – in signing an open letter which called for changes in the CDU’s policies and leadership.Robin Alexander (8 December 2013), Brandbrief: Das Manifest der jungen CDU gegen die Spitze Welt am Sonntag.
