Lyle Stewart was born and raised near Pense, Saskatchewan where he continues to farm and ranch with his wife Linda and son Lee.
Lyle was one of the first members in the newly formed Saskatchewan Party and was elected to the Legislative Assembly as the MLA for Thunder Creek in 1999. He was re-elected in 2003, 2007, 2011, 2016 and 2020.
During his two terms in opposition, Lyle served as the interim leader of the party, as well as the critic for Agriculture, Economic Development and Industry and Resources.
After the Saskatchewan Party formed the government in 2007, Lyle served as the Minister for Enterprise and Innovation, chair of the Legislature's Standing Committee on the Economy, and as a member of Treasury Board.
On May 25, 2012, Premier Brad Wall appointed Lyle as the Minister of Agriculture and Minister Responsible for Saskatchewan Crop Insurance Corporation, a role in which he served for over six years. Lyle has also served as Legislative Secretary to the Minister Responsible for Water Security Agency.
Lyle currently serves as Provincial Secretary and Legislative Secretary to the Premier responsible for Provincial Autonomy. He is focused on areas where Saskatchewan can exercise and strengthen its provincial autonomy within the Canadian federation. He is also a member of the Sask Builds Management Committee.
Lyle and his wife Linda have three grown children and five grandchildren.