Lippert was elected to the Minnesota House of Representatives in 2018, winning the seat left open by former representative David Bly, who announced his retirement in February 2018.[3] Lippert stated that he became active in politics through his work as a pastor, getting involved in faith-based groups such as ISAIAH Minnesota which led to him wanting to run for office.[4] During the 2021–2022 session, Lippert served as an assistant majority leader. In January 2022, Lippert announced he would not seek re-election for a third term, stating that he would like to continue working to help Democrats connect with rural communities.[5]
While in the legislature, Lippert authored many bills relating to rural communities, small farmers, soil and water health, and combating climate change.[6][7][8][9][10][11] Alongside Republican Mike Goggin, Lippert advocated for a "Farm to School" program to get local produce into school lunches.[12] He proposed a ban on chlorpyrifos, the most widely used pesticide for soybean farms in Minnesota, and which can cause brain damage in children.[13] In 2022, he authored a bill creating a carbon trading program alongside Senator Dave Senjem.[14] Lippert also worked with senate republicans to pass a bill that increased the minimum wage of caregivers employed by the state through Medicaid.[15][16]