In 1936, after several years as a junior minister, Morrison was made Minister of Agriculture and Fisheries by Stanley Baldwin. He also served as a minister under Neville Chamberlain and Winston Churchill, including as Minister of Food (1939–1940), Postmaster General (1940–1943), and Minister of Town and Country Planning (1943–1945). Morrison was elevated to the speakership following the 1951 general election. He was praised for his impartiality, especially during the heated debate on the Suez Crisis, and was raised to the viscountcy when his term ended. Lord Dunrossil became governor-general in 1960, on the nomination of Robert Menzies, but served only a year before dying in office.