Wyoming has sentcongressional delegations to theUnited States Senate andUnited States House of Representatives since it became a state in 1890.^[1]: 191 Before becoming a state, theWyoming Territory elected anon-voting delegate at-large to Congress, beginning with the41st United States Congress in 1869.^[2]: 182 Wyoming first sent a voting representative to Congress in the51st United States Congress, following its statehood.^[2]: 228

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 theSeventeenth Amendment in 1913, Wyoming senators were elected by theWyoming State Legislature; afterwards, senators were elected directly by the people of the state.^[3] Currently, Wyoming is represented in the Senate byJohn Barrasso andCynthia Lummis.^[4]

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 theUnited States Census.^[5][6] Wyoming has had one representative in the House since its statehood.^[2]: 41 Currently, Wyoming is represented in the House byHarriet Hageman.^[7]

Wyoming's congressional delegations have been exclusively composed of Republicans since the96th United States Congress in 1979. The last Democrat to represent Wyoming in Congress wasTeno Roncalio, who resigned in 1978 when he retired from the House of Representatives.^[8]

Current U.S. senators from Wyoming

Wyoming CPVI(2025):[9] R+23	Class I senator	Class II senator
	John Barrasso (Senior senator) (Casper)	Cynthia Lummis (Junior senator) (Cheyenne)
Party	Republican	Republican
Incumbent since	June 25, 2007[10]	January 3, 2021[11]

Wyoming's current congressional delegation in the119th United States Congress consists of two senators,John Barrasso andCynthia Lummis, and one representative,Harriet Hageman, all of whom areRepublicans.^[4][7] The state has had two senators and one voting representative in theHouse of Representatives since its statehood in 1890.^[2]: 41

TheCook Partisan Voting Index (CPVI) is a measure of how strongly partisan a state is.^[12]: 274 For each district or state, the CPVI measures the party leaning (Democratic or Republican) 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.^[13] As of 2025, the CPVI rated Wyoming as leaning Republican at R+23.^[9]

Current U.S. representative from Wyoming

District	Member (Residence)[14]	Party	Incumbent since	CPVI (2025)[15]	District map
At-large	Harriet Hageman (Cheyenne)	Republican	January 3, 2023[16]	R+23

Twenty-two people have represented Wyoming in theUnited States Senate, including sixteenRepublicans and sixDemocrats.Cynthia Lummis, a sitting member, is the first woman to represent Wyoming in the Senate.^[21] Several senators from Wyoming have risen to leadership roles; for instance, bothAlan Simpson and sitting senatorJohn Barrasso have served asSenate Republican Whip,^[22]Mike Enzi chaired both theHealth, Education, Labor and Pensions andBudget committees while serving in the Senate,^[19] andFrancis E. Warren chaired theSenate Appropriations Committee during his tenure.^[17]

Senators are elected every six years depending on theirclass, 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.^[23] 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.^[4]

Twenty-seven people have represented Wyoming in theHouse of Representatives, including nineteenRepublicans and eightDemocrats. Of those, seven represented Wyoming as anon-voting delegate prior to Wyoming's statehood in 1890. The most recent four,Barbara Cubin,Cynthia Lummis,Liz Cheney, andHarriet Hageman, have all been women; they are also the only representatives from Wyoming to have been women.^[39]

Many representatives from Wyoming have held important roles in the House. For instance,Frank W. Mondell was theHouse Majority Leader for the66th and67th United States Congress;^[35] additionally,Liz Cheneychaired the House Republican Conference and served as vice chair on theJanuary 6th Committee.^[37][38] Others have gone on to serve in other political offices; for example,Dick Cheney resigned from the House to become theSecretary of Defense in theGeorge H. W. Bush administration, and later becameVice President of the United States in theGeorge W. Bush administration.^[40][36]

Each district uses a popular vote to elect a member of its delegation in the House of Representatives.^[5] Districts are redrawn every ten years, after data from theUS Census is collected.^[41] Wyoming has had one district representing the entire state since its statehood.^{[2]: 41 [42]} Currently, Wyoming is represented byHarriet Hageman in the House.^[7]

TheWyoming Territory was created on July 25, 1868.^[1]: 165 Beginning with the41st United States Congress, it sent anon-voting delegate to the House.^[2]: 182

Since its statehood in 1890,^[1]: 191 Wyoming has been apportioned one seat in the House.^{[2]: 41 [42]}

• List of United States congressional districts
• Wyoming's congressional districts
• Political party strength in Wyoming

• Politics of Wyoming
• United States congressional delegations by state
• Lists of Wyoming politicians

• Articles with short description
• Short description is different from Wikidata
• Use mdy dates from June 2024