In April 2006, State Representative
John Ainsworth announced he would not seek reelection to another term. A few weeks later, in an event at his family farm, Tauchen announced he would be a candidate for
Wisconsin State Assembly in the seat vacated by Ainsworth. Ultimately, four other candidates also joined the Republican
primary in the heavily Republican district, though one candidate, Paul Mogged, would drop out before the primary to endorse Tauchen. Tauchen was also endorsed by the Wisconsin Farm Bureau—a lobbying organization for farming interests. Tauchen prevailed in the primary, receiving a majority of the votes in the four-way contest. In the general election, Tauchen defeated Democrat Richard Lieffring, a teacher from
Cecil, Wisconsin, taking 60% of the vote. Tauchen has subsequently been reelected seven times. Tauchen currently serves as chairman of the Assembly Committee on Agriculture and also serves on the Assembly committees on Energy and Utilities, on State Affairs, and on Tourism. On January 21, 2021, he announced that he would not seek re-election. ==Electoral history==