Wyoming's congressional delegations
Wyoming has sent congressional delegations to the United States Senate and United States House of Representatives since it became a state in 1890. Before becoming a state, the Wyoming Territory elected a non-voting delegate at-large to Congress, beginning with the 41st United States Congress in 1869. Wyoming first sent a voting representative to Congress in the 51st United States Congress, following its statehood.
Each U.S. state elects two senators to serve for six years in general elections, with their re-election staggered. Prior to the ratification of the Seventeenth Amendment in 1913, Wyoming senators were elected by the Wyoming State Legislature; afterwards, senators were elected directly by the people of the state. Currently, Wyoming is represented in the Senate by John Barrasso and Cynthia Lummis.
Each state elects at least one member to the House of Representatives for a two-year term. The number of House members is proportional to the state's share of the national population, and changes every ten years with the results of the United States Census. Wyoming has had one representative in the House since its statehood. Currently, Wyoming is represented in the House by Harriet Hageman.
Wyoming's congressional delegations have been exclusively composed of Republicans since the 96th United States Congress in 1979. The last Democrat to represent Wyoming in Congress was Teno Roncalio, who resigned in 1978 when he retired from the House of Representatives.
Current delegation
Wyoming's current congressional delegation in the 119th United States Congress consists of two senators, John Barrasso and Cynthia Lummis, and one representative, Harriet Hageman, all of whom are Republicans. The state has had two senators and one voting representative in the House of Representatives since its statehood in 1890.The Cook Partisan Voting Index is a measure of how strongly partisan a state is. For each district or state, the CPVI measures the party leaning and the number of percentage points more partisan than the national average. For instance, a rating of R+4 would mean the district or state voted four percentage points more Republican than the national average, while a rating of D+9 would mean the district or state voted nine points more Democratic than the national average. As of 2025, the CPVI rated Wyoming as leaning Republican at R+23.
| District | Member | Party | Incumbent since | CPVI | District map |
Harriet Hageman | January 3, 2023 |
United States Senate
Twenty-two people have represented Wyoming in the United States Senate, including sixteen Republicans and six Democrats. Cynthia Lummis, a sitting member, is the first woman to represent Wyoming in the Senate. Several senators from Wyoming have risen to leadership roles; for instance, both Alan Simpson and sitting senator John Barrasso have served as Senate Republican Whip, Mike Enzi chaired both the Health, Education, Labor and Pensions and Budget committees while serving in the Senate, and Francis E. Warren chaired the Senate Appropriations Committee during his tenure.Senators are elected every six years depending on their class, with each senator serving a six-year term and elections for senators occurring every two years; the class up for re-election rotates such that each election, around one-third of the seats in the Senate are up for election. Wyoming's senators are elected in classes I and II. Currently, Wyoming is represented in the Senate by John Barrasso and Cynthia Lummis, both of whom are Republicans.
United States House of Representatives
Twenty-seven people have represented Wyoming in the House of Representatives, including nineteen Republicans and eight Democrats. Of those, seven represented Wyoming as a non-voting delegate prior to Wyoming's statehood in 1890. The most recent four, Barbara Cubin, Cynthia Lummis, Liz Cheney, and Harriet Hageman, have all been women; they are also the only representatives from Wyoming to have been women.Many representatives from Wyoming have held important roles in the House. For instance, Frank W. Mondell was the House Majority Leader for the 66th and 67th United States Congress; additionally, Liz Cheney chaired the House Republican Conference and served as vice chair on the January 6th Committee. Others have gone on to serve in other political offices; for example, Dick Cheney resigned from the House to become the Secretary of Defense in the George H. W. Bush administration, and later became Vice President of the United States in the George W. Bush administration.
Each district uses a popular vote to elect a member of its delegation in the House of Representatives. Districts are redrawn every ten years, after data from the US Census is collected. Wyoming has had one district representing the entire state since its statehood. Currently, Wyoming is represented by Harriet Hageman in the House.