Lorne Albert Calvert is a Canadian politician who served as the 13th premier of Saskatchewan, from 2001 to 2007. Calvert served as leader of the Saskatchewan New Democratic Party and Member of the Legislative Assembly for Saskatoon Riversdale from 2001 to 2009, when he retired. He also served as the MLA for Moose Jaw Wakamow from 1986 to 1999.

The Saskatchewan New Democratic Party (NDP) is a social-democratic political party in the Canadian province of Saskatchewan. The party was founded in 1932 as the Farmer-Labour Group and was known as the Saskatchewan section of the Co-operative Commonwealth Federation (CCF) from 1935 until 1967. The NDP currently forms the Official Opposition and is led by Carla Beck.