| Election Name: | 2018 United States Senate election in Wyoming |
| Country: | Wyoming |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 2012 United States Senate election in Wyoming |
| Previous Year: | 2012 |
| Next Election: | 2024 United States Senate election in Wyoming |
| Next Year: | 2024 |
| Election Date: | November 6, 2018 |
| Turnout: | 77.43% |
| Image1: | File:John Barrasso official portrait 112th Congress.jpg |
| Nominee1: | John Barrasso |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 136,210 |
| Percentage1: | 66.96% |
| Nominee2: | Gary Trauner |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 61,227 |
| Percentage2: | 30.10% |
| Map Size: | 250px |
| U.S. Senator | |
| Before Election: | John Barrasso |
| Before Party: | Republican Party (United States) |
| After Election: | John Barrasso |
| After Party: | Republican Party (United States) |
The 2018 United States Senate election in Wyoming took place on November 6, 2018, to elect a member of the United States Senate to represent the State of Wyoming. The primary election took place August 21, 2018.[1] Republican John Barrasso won re-election with 67% percent of the vote, the lowest percentage of his three U.S. Senate campaigns and the closest a Democrat has come to winning a seat since the 1996 election, and the first time since that election in which Democrats managed to even win counties in the state, those being Teton and Albany, and the first time that the Democratic candidate won any counties for this seat since 1994.
In 2012, incumbent Republican John Barrasso was re-elected with 76% of the vote. Heavily rural, Wyoming has the smallest population of any state and is considered the most Republican state in the nation. It has not elected a Democratic Senate candidate since 1970. In 2008, Republican presidential nominee John McCain carried the state with 64% of the vote. Republican Mitt Romney won it in 2012 with 68% of the vote, and Republican Donald Trump won it in 2016 with 67% of the vote.
| Source | Ranking | As of | |
|---|---|---|---|
| The Cook Political Report[12] | October 26, 2018 | ||
| Inside Elections[13] | November 1, 2018 | ||
| Sabato's Crystal Ball[14] | November 5, 2018 | ||
| Fox News[15] | November 5, 2018 | ||
| CNN[16] | November 5, 2018 | ||
| RealClearPolitics[17] | November 5, 2018 |
| John Barrasso Republican | Gary Trauner Democrat | Joseph Porambo Libertarian | Write-Ins | Total | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| County | Votes | % | Votes | % | Votes | % | Votes | % | Votes | ||
| Albany | 6,366 | 44.15% | 7,576 | 52.54% | 442 | 3.07% | 35 | 0.24% | 14,419 | ||
| Big Horn | 3,564 | 82.56% | 639 | 14.80% | 102 | 2.36% | 12 | 0.28% | 4,317 | ||
| Campbell | 11,020 | 84.44% | 1,628 | 12.47% | 387 | 2.97% | 16 | 0.12% | 13,051 | ||
| Carbon | 3,673 | 70.72% | 1,359 | 26.16% | 156 | 3.00% | 6 | 0.12% | 5,194 | ||
| Converse | 3,959 | 79.87% | 834 | 16.82% | 153 | 3.09% | 11 | 0.22% | 4,957 | ||
| Crook | 2,642 | 85.56% | 335 | 10.84% | 110 | 3.56% | 1 | 0.03% | 3,089 | ||
| Fremont | 9,262 | 64.34% | 4,734 | 32.89% | 380 | 2.64% | 19 | 0.13% | 14,395 | ||
| Goshen | 3,658 | 76.24% | 1,020 | 21.26% | 115 | 2.40% | 5 | 0.10% | 4,798 | ||
| Hot Springs | 1,742 | 77.15% | 455 | 20.15% | 58 | 2.57% | 3 | 0.13% | 2,258 | ||
| Johnson | 3,085 | 79.33% | 722 | 18.57% | 79 | 2.03% | 3 | 0.08% | 3,889 | ||
| Laramie | 19,473 | 59.72% | 12,167 | 37.31% | 907 | 2.78% | 61 | 0.19% | 32,608 | ||
| Lincoln | 5,846 | 81.23% | 1,152 | 16.01% | 187 | 2.60% | 12 | 0.16% | 7,197 | ||
| Natrona | 16,359 | 66.87% | 7,285 | 29.78% | 778 | 3.18% | 42 | 0.17% | 24,464 | ||
| Niobrara | 980 | 84.56% | 144 | 12.42% | 32 | 2.76% | 3 | 0.26% | 1,159 | ||
| Park | 8,938 | 75.57% | 2,589 | 21.89% | 276 | 2.33% | 24 | 0.20% | 11,827 | ||
| Platte | 2,850 | 75.30% | 801 | 21.16% | 131 | 3.46% | 3 | 0.08% | 3,785 | ||
| Sheridan | 8,318 | 70.46% | 3,205 | 27.15% | 261 | 2.21% | 21 | 0.18% | 11,805 | ||
| Sublette | 2,653 | 77.87% | 668 | 19.61% | 84 | 2.47% | 2 | 0.06% | 3,407 | ||
| Sweetwater | 8,577 | 66.11% | 3,943 | 30.39% | 430 | 3.31% | 23 | 0.18% | 12,973 | ||
| Teton | 3,833 | 32.62% | 7,691 | 65.46% | 220 | 1.87% | 6 | 0.05% | 11,750 | ||
| Uinta | 4,713 | 75.05% | 1,371 | 21.83% | 188 | 2.99% | 8 | 0.13% | 6,280 | ||
| Washakie | 2,423 | 77.91% | 588 | 18.91% | 93 | 2.99% | 6 | 0.19% | 3,110 | ||
| Weston | 2,275 | 84.64% | 321 | 11.94% | 89 | 3.31% | 3 | 0.11% | 2,688 | ||
Counties that flipped from Republican to Democratic
Official campaign websites