Steffen began his political career in 2007, when he was elected to the
Howard, Wisconsin board of trustees. He would then be elected to the
Brown County board of Supervisors in 2012. He served in both of these roles until 2015, when he was sworn in as a state representative. In 2020, Steffen proposed legislation that would dissolve the Lambeau Field Stadium District, which maintains the stadium at Lambeau Field. His proposal would additionally transfer ownership of the field to
Green Bay, Wisconsin and see funds and assets redistributed to residents of the city and surrounding county. Steffen argued that the legislation would simplify the financial situation between the city and the Green Bay Packers and eliminate administrative costs. He also argued that the district had served its purpose and completed all of the objectives which had been assigned to it by the legislature upon its creation. To avoid a lawsuit, Steffen withdrew his proposal in exchange for further agreements regarding transparency and oversight of the board. Following the defeat of
Donald Trump in the
2020 presidential election, Steffen joined other Republicans in efforts to
attempts to overturn the 2020 presidential election. In 2024, Steffen faced vice chair of the
Oconto County Republican Party Darwin Behnke, the father of fellow representative
Elijah Behnke. During the campaign, Steffen criticized Behnke's campaign for financial issues. The campaign also proved to be divisive at the county level, as Steffen had the support of the Brown County Republicans whereas Behnke drew support from the Oconto County Republicans. Steffen drew criticism from politicians in the more rural Oconto County as he was seen as inexperienced on rural issues. Steffen defeated Behnke by 33 points and faced Democrat Jane Benson in the general election, who he defeated by 32 points. == Personal life ==