2018, Fischbach resigned from the Senate and was sworn in as lieutenant governor. Campaign In May 2018, former Republican Governor Tim Pawlenty announced Fischbach as his running mate in his bid for a third term. Pawlenty and Fischbach were defeated in the Republican primary by Jeff Johnson and Donna Bergstrom. Fischbach was succeeded as lieutenant governor by Democrat Peggy Flanagan, running mate of Tim Walz, who was sworn in on January 7, 2019. U.S. House of Representatives Elections 2020 On September 3, 2019, Fischbach announced her candidacy for the Republican nomination to challenge 30-year incumbent Democrat Collin Peterson in Minnesota's 7th congressional district. She won the five-way Republican primary election. Despite Peterson's incumbency, the 7th had been trending Republican for some time. The Republican presidential nominee had carried the district by double-digit margins in three of the last five elections. This included 2016, when Donald Trump carried it with 62 percent of the vote, his best showing in Minnesota and one of Trump's best performances in a district held by a Democrat. During her campaign, Fischbach pledged to back Trump on trade, make the 2017 tax cuts permanent, and support workforce education and additional relief for rural and agricultural businesses affected by COVID-19. Her campaign emphasized her support for farmers and the Second Amendment, opposition to abortion, and support for strengthening the U.S. border. Fischbach defeated Peterson by 49,226 votes, the largest margin of any Republican who defeated an incumbent Democrat in 2020. In that same election, Trump carried the 7th with 64 percent of the vote, his best showing in the state. She and Mariannette Miller-Meeks of Iowa are the only Republican members of Congress to flip Democratic House districts that were not held by Republicans before 2018. Tenure On January 7, 2021, Fischbach was one of 139 representatives to object to the certification of electoral votes from Arizona and Pennsylvania in the 2020 U.S. presidential election, citing allegations of irregularities and voter fraud. On January 13, 2021, she voted against the second impeachment of Trump. Fischbach, along with all other Senate and House Republicans, voted against the American Rescue Plan Act of 2021. In September 2021, Fischbach was among 75 House Republicans to vote against the National Defense Authorization Act of 2022, which contains a provision that would require women to be drafted. Committee assignments Committee on Agriculture Subcommittee on Commodity Exchanges, Energy, and Credit (Ranking Member) Subcommittee