The Apple Cart: A Political Extravaganza is a 1928 play by George Bernard Shaw
Shaw's preface describes the play as:
…a comedy in which a King defeats an attempt by his popularly elected Prime Minister to deprive him of the right to influence public opinion through the press and the platform: in short, to reduce him to a cipher. The King's reply is that rather than be a cipher he will abandon his throne and take his obviously very rosy chance of becoming a popularly elected Prime Minister himself.
https://en.wikipedia.org/wiki/The_Apple_Cart