Diefenbaker was born in southwestern Ontario in the small town of Neustadt in 1895. In 1903, his family migrated west to the portion of the North-West Territories which would soon become the province of Saskatchewan. He grew up in the province and was interested in politics from a young age. After brief service in World War I, Diefenbaker became a noted criminal defence lawyer. He contested elections through the 1920s and 1930s with little success until he was finally elected to the House of Commons in 1940.