 During campaign for 2007 parliamentary election, Houdek sang party anthem "HDZ zna" (HDZ knows) for the conservative Croatian Democratic Union (HDZ) which was at the time ran by Ivo Sanader.He later also sang for the mayoral campaign of the populist Milan Bandić.Houdek said in an interview for Jutarnji list that he is apolitical and that those were just professional engagements as any other.