Lorentz was elected to represent the riding of Battleford-Cut Knife as a member of the Saskatchewan Party in a by-election on March 17, 2003. The riding had been left vacant following the death of Rudi Peters.[2] However, the riding was redistributed and he lost his party's nomination in the new electoral district of Cut Knife-Turtleford to Michael Chisholm.[3] Lorenz holds the distinction of having the shortest term as an MLA, as he served only six months in the position.[citation needed]
Lorenz also served as the mayor of Wilkie, Saskatchewan.[4][5] He is currently working as a real estate agent.