The 2020 United States Senate election in Wyoming was held on November 3, 2020, to elect a member of the United States Senate to represent the State of Wyoming, concurrently with the 2020 U.S. presidential election, as well as other elections to the United States Senate in other states and elections to the United States House of Representatives and various state and local elections. Cynthia Lummis defeated Democrat Merav Ben-David by more than 46 percentage points, becoming the first female U.S. Senator from Wyoming and succeeding fellow Republican Mike Enzi, who did not run for reelection. This was the first open Senate seat since 1996, when Enzi was first elected. The Democratic and Republican party primary elections were held on August 18, 2020. This was the first time since 1996 that Democrats won any county for this seat.

Cynthia Lummis won the election with 72.85% of the popular vote, winning 2.91% more than President Donald Trump had won in the concurrent presidential election in the state.

Republican primary Candidates Nominee Cynthia Lummis, former U.S. representative for Wyoming's at-large congressional district and former Treasurer of Wyoming

Eliminated in primary R. Mark Armstrong, geologist Devon Cade, businessman John Holtz, attorney and U.S. Air Force veteran Michael Kemler Bryan Miller, candidate for U.S. Senate in 2014 Donna Rice, estate lawyer Star Roselli, conspiracy theorist Robert Short, Converse County commissioner and businessman Joshua Wheeler, Wyoming Army National Guard veteran

Withdrawn Patrick Dotson, retiree Rolland Holthus

Declined Liz Cheney, incumbent U.S. representative for Wyoming's at-large congressional district, Chair of House Republican Conference, and daughter of the 46th Vice President Dick Cheney (running for re-election) Mike Enzi, incumbent U.S. senator (endorsed Cynthia Lummis) Foster Friess, businessman and former governor candidate Mark Gordon, governor of Wyoming Robert Grady, policy adviser to former president George H. W. Bush Matt Mead, former governor of Wyoming Donald Trump Jr., businessman and son of President of the United States Donald Trump

Endorsements

Polling Poll source Date(s)administered Samplesize Marginof error MarkArmstrong JillianBallow LizCheney FosterFriess CynthiaLummis Undecided January 16, 2020 Cheney announces she will not runThe Tarrance Group (R)The Tarrance Group (R) June 22–24, 2019 502 (LV) ± 4.5% – –56% – 34% –

Results

Democratic primary Candidates Nominee Merav Ben-David, Chair of the Department of Zoology and Physiology at the University of Wyoming and wildlife ecologist

Eliminated in primary Kenneth R. Casner, Democratic candidate for the 2018 Wyoming gubernatorial election and Democratic nominee for District 47 of the Wyoming House of Representatives in 2016 James DeBrine, progressive activist Yana Ludwig, democratic socialist activist and community organizer Nathan Wendt, think tank executive, management consultant, businessman, entrepreneur Rex Wilde, veteran, service technician, Democratic candidate for the 2018 Wyoming gubernatorial election and Democratic candidate for the 2014 United States Senate election in Wyoming

Withdrawn Chuck Jagoda, teacher

Endorsements

Results

MeravBen-David YanaLudwig NathanWendt KennethCasner RexWilde JamesDeBrine Total County Votes % Votes % Votes % Votes % Votes % Votes % VotesAlbany1,86756.07%80924.29%3149.43%1875.62%842.52%692.07%3,330Big Horn8438.71%4922.58%4219.35%188.29%177.83%73.23%217Campbell14431.51%11424.95%10522.98%378.10%357.66%224.81%457Carbon19932.36%11017.89%8613.98%13822.44%436.99%396.34%615Converse7832.37%5321.99%3815.77%3614.94%197.88%177.05%241Crook4339.45%2220.18%1917.43%1110.09%76.42%76.42%109Fremont83142.81%42421.84%29615.25%1557.99%1457.47%904.64%1,941Goshen14836.63%10926.98%6616.34%379.16%276.68%174.21%404Hot Springs8152.26%2717.42%138.39%117.10%1710.97%63.87%155Johnson9951.03%3216.49%3618.56%157.73%73.61%52.58%194Laramie1,80836.02%94218.76%80015.94%71214.18%55611.08%2024.02%5,020Lincoln14637.73%7519.38%8321.45%276.98%4712.14%92.33%387Natrona93338.68%52721.85%43618.08%27811.53%1425.89%963.98%2,412Niobrara1948.72%923.08%410.26%25.13%410.26%12.56%39Park31343.53%15821.97%11716.27%476.54%618.48%233.20%719Platte14236.79%5413.99%7218.65%4311.14%4110.62%348.81%386Sheridan54545.45%24420.35%21317.76%847.01%665.50%473.92%1,199Sublette10459.09%2514.20%2715.34%84.55%116.25%10.57%176Sweetwater63830.40%39218.68%43920.91%1627.72%37117.68%974.62%2,099Teton1,06339.52%55720.71%88933.05%672.49%792.94%351.30%2,690Uinta19837.57%12924.48%7113.47%397.40%6913.09%213.98%527Washakie6533.68%4221.76%3618.65%199.84%2010.36%115.70%193Weston3735.92%2524.27%1110.68%76.80%1413.59%98.74%103Total9,58540.59%4,92820.87%4,21317.84%2,1409.06%1,8827.97%8653.66%23,613

General election Predictions SourceRankingAs of The Cook Political Report October 29, 2020 Inside Elections October 28, 2020 Sabato's Crystal Ball November 2, 2020Daily Kos October 30, 2020PoliticoNovember 2, 2020RCPOctober 23, 2020DDHQNovember 3, 2020538November 2, 2020EconomistNovember 2, 2020

Post-primary endorsements

Polling Poll source Date(s)administered Samplesize Marginof error CynthiaLummis (R) MeravBen-David (D) UndecidedUniversity of WyomingUniversity of WyomingOctober 8–28, 2020614 (LV)± 4%56%26%–

Results Lummis outperformed fellow Republican Donald Trump in the concurrent presidential election by 2.9%, or 4,541 votes. She also won Albany County by 1%, or 182 raw votes, while Trump lost it by 2.7%, or 513 votes. She performed significantly better in the Democratic stronghold of Teton County, receiving 37.3% of the total vote, compared to Trump's 29.6%.

By county CountyCynthia LummisRepublicanMerav Ben-DavidDemocraticWrite-inMarginTotal votes#%#%#%#%Albany9,22050.309,03849.31700.381820.9918,328Big Horn4,88786.4275613.37120.214,13173.055,655Campbell16,96089.191,93810.191170.6215,02279.0019,015Carbon5,09177.701,44121.99200.313,65055.716,552Converse5,71584.011,02815.11600.884,68768.906,803Crook3,65390.353729.20180.453,28181.154,043Fremont12,31469.435,38530.36360.206,92939.0717,735Goshen4,91079.931,20619.63270.443,70460.306,143Hot Springs2,00179.0352720.8140.161,47458.222,532Johnson3,92181.1590518.7360.123,01662.424,832Laramie29,35765.6415,15333.882120.4714,20431.7644,722Lincoln8,84685.631,46014.13240.237,38671.5010,330Natrona25,06172.759,21026.741780.5215,85146.0134,449Niobrara1,13387.6915612.0730.2397775.621,292Park13,18980.543,11719.03700.4310,07261.5116,376Platte3,96281.3689818.44100.203,06462.924,870Sheridan12,28776.173,77823.42670.418,50952.7516,132Sublette4,00482.5283517.21130.273,16965.314,852Sweetwater12,35175.893,87723.82460.288,47452.0716,274Teton5,37037.209,03062.56340.23-3,660-25.3614,434Uinta7,55082.321,59717.41250.275,95364.909,172Washakie3,27783.0065916.69120.302,61866.313,948Weston3,04188.2040011.6070.202,64176.603,448 Totals198,10072.8572,76626.761,0710.39125,33446.09271,937 Counties that flipped from Republican to Democratic Teton (largest municipality: Jackson)

Notes Partisan clients

Voter samples and additional candidates

References

External links

(state affiliate of the U.S. League of Women Voters)

Official campaign websites Merav Ben-David (D) for Senate Cynthia Lummis (R) for Senate