He was elected in a by-election on March 5, 2009, defeating Progressive Conservative leader John Tory.
In his term on the OPSBA, Johnson introduced breakfast, co-operative education and literacy programs for his district.
[4] Johnson capitalized on public anger from Scott's move and narrowly defeated Tory in the subsequent by-election.
[5] Johnson served as the Parliamentary Assistant to the Minister of Infrastructure, Bob Chiarelli.
He previously served as the Parliamentary Assistant to the Minister of Agriculture, Food and Rural Affairs.