[1] Allan served as Mayor of Dunnville and Warden of Haldimand County along with various other municipal posts.
[2] In the 1951 provincial election, Allan ran as the Progressive Conservative candidate in the riding of Haldimand—Norfolk.
At the time, this was the government's largest department, and Allan oversaw a budget of $200 million.
When Frost retired, Allan ran in the 1961 PC leadership convention, placing fourth.
Allan had the title of Treasurer in the new cabinet of John Robarts until 1966 when he entered semi-retirement at the age of 71 and became a minister without portfolio.