Dickson was a small business owner until his election as a divisional councillor for Maroochy Shire in 2000. He acted as a chair for town planning and a board member of the combined Maroochy/Caloundra Water Board. In 2006 he entered state politics, taking the seat of Kawana and defeating sitting ALP member Chris Cummins with a 7% swing. He was a vocal supporter of a merger between the Liberal and National Parties. He was a member of the Liberal Party until the merger of the Liberal and National parties, whereupon he became a member of the Liberal National Party of Queensland. On 12 August 2008, he became Shadow Minister for Workplace and Job Security. In the 2009 state election, he transferred to the seat of Buderim. In 2011 he was appointed Shadow Minister for Energy and Water Utilities.