Wisconsin’s congressional delegation has ten members: U.S. Senators Ron Johnson and Tammy Baldwin, plus eight U.S. representatives, one for each of the state’s House districts. Republicans hold seven of the ten seats in the 119th Congress, and Democrats hold three.
Wisconsin’s U.S. Senators
Senators serve six-year terms and represent the whole state.1Constitution Annotated. ArtI.S3.C1.4 Six-Year Senate Terms Wisconsin’s two seats fall in different election classes, so both are never on the ballot in the same year.
Ron Johnson (Republican)
Johnson first won his seat in 2010, defeating incumbent Russ Feingold. He won re-election in 2016 and again in November 2022, when he defeated Mandela Barnes. His current term runs through January 2029. Johnson sits on the Senate Finance Committee, the Homeland Security and Governmental Affairs Committee, and the Budget Committee. He chairs the Finance Subcommittee on Fiscal Responsibility and Economic Growth and the Permanent Subcommittee on Investigations under Homeland Security.2U.S. Senate. Committee Assignments of the 119th Congress
Tammy Baldwin (Democrat)
Baldwin was first elected in 2012, becoming the first woman to represent Wisconsin in the Senate and the first openly gay person elected to the U.S. Senate.3U.S. Senator Tammy Baldwin. About Tammy She won re-election in 2018 and a third term in November 2024, with her current term running through January 2031. Baldwin serves on the Appropriations Committee, the Commerce, Science, and Transportation Committee, and the Health, Education, Labor, and Pensions Committee. She is ranking member on the Appropriations Subcommittee on Labor, Health and Human Services, and Education and on the Commerce Subcommittee on Science, Manufacturing, and Competitiveness.2U.S. Senate. Committee Assignments of the 119th Congress
Wisconsin’s U.S. House Members by District
Each House member represents one of Wisconsin’s eight districts and serves a two-year term.4house.gov. The House Explained The state kept all eight seats after the 2020 census.5United States Census Bureau. 2020 Census Apportionment Results
1st District: Bryan Steil (Republican)
Steil has served since January 2019. He sits on the Financial Services Committee and chairs the Committee on House Administration, which oversees federal elections, the day-to-day operations of the House, and the Smithsonian Institution.6Wisconsin Legislature. U.S. Congressional Districts and Representatives Committee Assignments
2nd District: Mark Pocan (Democrat)
Pocan has served since January 2013 and sits on the Appropriations Committee. The district includes Madison, the state capital and home to the University of Wisconsin’s flagship campus.
3rd District: Derrick Van Orden (Republican)
Van Orden won his seat in 2022 and took office in January 2023. He serves on the Agriculture, Armed Services, and Veterans’ Affairs Committees. The district covers largely rural western Wisconsin.
4th District: Gwen Moore (Democrat)
Moore is the longest-serving House member in the delegation, in office since January 2005. She represents the Milwaukee area and sits on the Ways and Means Committee, which handles tax policy, trade, and entitlement programs including Social Security and Medicare.
5th District: Scott Fitzgerald (Republican)
Fitzgerald was first elected to the House in 2020 after serving as majority leader in the Wisconsin State Senate. He sits on the Financial Services and Judiciary Committees.
6th District: Glenn Grothman (Republican)
Grothman has held the seat since January 2015. He carries a heavy committee load: Budget, Education and Workforce, Judiciary, and Oversight and Government Reform.6Wisconsin Legislature. U.S. Congressional Districts and Representatives Committee Assignments
7th District: Tom Tiffany (Republican)
Tiffany first entered Congress through a May 2020 special election and has won re-election since. He sits on the Judiciary and Natural Resources Committees. The northern Wisconsin district relies heavily on forestry, tourism, and outdoor recreation.
8th District: Tony Wied (Republican)
Wied is the newest member of the delegation. He won both a special election and the general election for the seat on November 5, 2024, and took office on November 12, 2024, filling the vacancy left by Mike Gallagher, who resigned in April 2024. Wied serves on the Agriculture, Small Business, and Transportation and Infrastructure Committees.
How to Contact Your Representative or Senator
Every member of Congress keeps a Washington, D.C. office and at least one district office in Wisconsin. To find your House member, use the official lookup tool at house.gov and enter your ZIP code; the tool links directly to your member’s website and contact page.7house.gov. Find Your Representative You can also call the U.S. House switchboard at (202) 224-3121. Both senators represent you no matter where in the state you live, so you can contact either or both directly through their Senate websites.
Congressional offices do more than take positions on bills. Staff regularly help constituents who have run into trouble with federal agencies, including the IRS, the Social Security Administration, Veterans Affairs, and U.S. Citizenship and Immigration Services. If you cannot get a timely response from a federal agency, a congressional casework team can often move your case forward. Offices also handle requests for U.S. flags flown over the Capitol, military academy nominations, and help with passport problems.
How Seats Get Filled Between Elections
When a House seat opens mid-term, the Constitution requires a special election; governors cannot appoint someone to the House. Tom Tiffany and Tony Wied both entered Congress that way before later winning full-term races. Senate vacancies work differently in most states, where the governor appoints a temporary replacement, though some states require a special election instead.
Voting in Wisconsin’s Congressional Primaries
Wisconsin uses an open primary for congressional races. Voters do not register with a party, and on primary day any voter can choose which party’s ballot to cast. Picking one party’s ballot does not lock you into that party in future elections. Primary winners from each party then face each other in the November general election.
Redistricting Status
Wisconsin’s current congressional map is based on boundaries originally drawn after the 2010 census and has produced a consistent 6–2 Republican split in House seats. Two federal lawsuits are challenging the maps as unconstitutional gerrymanders. As of early 2026, neither case is expected to produce new maps before the November 2026 midterm elections, so the current districts will likely remain in place for at least one more election cycle.