Larson was first elected as a state representative in the 2018 general elections. In that election, he defeated his Democratic Party opponent, winning 53.63% of the vote.[4] In the 2022 Colorado House elections, Larson was redistricted to the 25th district and lost his re-election bid to Tammy Story in what media outlets considered an unexpected loss.[5][6] Larson was poised to become the House minority leader in the upcoming legislative session.[5]