His accomplishments included revitalizing Marine Atlantic with two new ferries,[5] initiating Canada Post's postal transformation, and overseeing the rollout of Transport Canada's Alberta and Saskatchewan infrastructure funds as a part of Canada's Economic Action Plan.
Merrifield was first elected to represent Yellowhead in 2000.[6] He was re-elected in 2004, 2006, and 2008.[6]
His past community involvement has included terms as chair and elected board member of the Whitecourt School District Board of Trustees, chair and vice-chair of the Whitecourt/Fox Creek Hospital Board, member of the Aspen Regional Health Authority, member of the Northern Gateway Regional Division No. 10 School Authority and elected member of the Woodland County Council.[citation needed]