First elected in 2003, Delbert was re-elected in the 2007, 2011 and 2016 provincial elections.
During his term in opposition, Delbert served as the Saskatchewan Party critic for Forestry, Deputy Critic for Northern Affairs, Industry & Commerce, and as Vice-Chair of the Committee on the Economy.
Following the formation of a Saskatchewan Party government, Premier Brad Wall asked Delbert to serve as the Chair of the Legislature's Standing Committee on Intergovernmental Affairs and Justice. Delbert was also appointed as Legislative Secretary to the Premier (Saskatchewan Heritage Initiative) and as a Legislative Secretary to the Minister of Corrections, Public Safety and Policing.
Delbert has served as Deputy Government House Leader, a member of the Standing Committee on Crowns and Central Agencies and as a member of the House Services Committee.
Delbert is Deputy Chair of Committees and currently serves as a member of the Standing Committee on Economy and as a member of the Privileges House Committee.
Delbert and Valerie have three grown children.