| Election Name: | 2018 Wyoming State Senate election |
| Country: | Wyoming |
| Type: | legislative |
| Ongoing: | no |
| Election Date: | November 6, 2018 |
| Previous Election: | Wyoming State Senate election, 2016 |
| Previous Year: | 2016 |
| Next Election: | 2020 Wyoming State Senate election |
| Next Year: | 2020 |
| Seats For Election: | 15 seats from odd-numbered districts |
| Leader1: | Eli Bebout |
| Party1: | Republican Party (United States) |
| Leaders Seat1: | 26th district |
| Seats Before1: | 27 |
| Seats After1: | 27 |
| Popular Vote1: | 62,128 |
| Percentage1: | 63.37% |
| Swing1: | 1.33% |
| Leader2: | Chris Rothfuss |
| Party2: | Democratic Party (United States) |
| Leaders Seat2: | 9th district |
| Seats Before2: | 3 |
| Seats After2: | 3 |
| Popular Vote2: | 21,854 |
| Percentage2: | 22.29% |
| Swing2: | 0.66% |
| Map Size: | 350px |
| President of the Senate | |
| Before Election: | Eli Bebout |
| Before Party: | Republican Party (United States) |
| After Election: | Eli Bebout |
| After Party: | Republican Party (United States) |
The 2018 Wyoming Senate election was held on Tuesday, November 6, 2018, with the primary election held on August 21, 2018. Voters in the 15 odd-numbered districts of the Wyoming State Senate elected their representatives. The elections coincided with the elections for other offices, including U.S. Senate, U.S. House, Governor, and the State House
| Wyoming State Senate election, 2018 Primary election — August 21, 2018[1] | |||||||
|---|---|---|---|---|---|---|---|
| Party | Votes | Percentage | Candidates | Advancing to general | Seats contesting | ||
| Republican | 47,861 | 89.16% | 27 | 14 | 6 | ||
| Democratic | 5,820 | 10.84% | 7 | 7 | 6 | ||
| Totals | 53,681 | 100.00% | 34 | 21 | 6 | ||
| Wyoming State Senate elections, 2018 General election — November 6, 2018[2] | ||||||||
|---|---|---|---|---|---|---|---|---|
| Party | Votes | Percentage | Not up | Contested | Before | After | +/– | |
| Republican | 62,128 | 63.37% | 14 | 14 | 27 | 27 | ||
| Democratic | 21,854 | 22.29% | 1 | 7 | 3 | 3 | ||
| Under or Over Votes | 11,728 | 11.96% | - | - | - | - | - | |
| Write-ins | 1,437 | 1.47% | - | - | - | - | - | |
| Independent | 889 | 0.91% | 0 | 1 | 0 | 0 | ||
| Totals | 98,036 | 100.00% | 15 | 15 | 30 | 30 | N/A | |
Republican Incumbent Ogden Driskill was re-elected with no challenger.
Republican Cheri Steinmetz was elected with 80% of the vote compared to Democrat Marci Shaver who received 20% of the vote.
Republican Lynn Hutchings won the election with no challengers.
Republican Incumbent Stephan Pappas won the election with no challengers.
Democratic Incumbent Chris Rothfuss won the election with no challengers.
Republican Incumbent Larry S. Hicks was re-elected with 66% of the vote compared to Democrat Lee AnnStephenson who received 34% of the vote.
Republican Tom James defeated Incumbent Democrat John Hastert with 47% of the vote to Hastert's 37%, Independent candidate Ted L. Barney won 16% of the vote.
Republican Wendy Davis Schuler won the election with no challengers.
Democratic candidate Mike Gierau won the election with 62% of the vote against Republican Kate Mead who won 38% of the vote.
Republican R J Kost won the election with no challengers.
Republican Bo Biteman was elected with 64% of the vote compared to Democrat Hollis Hackman who received 35% of the vote.
Republican Incumbent Jeff Wasserburger won the election with no challengers.
Republican Incumbent Cale Case was elected with % of the vote compared to Democrat Sergio A. Maldonado Sr. who received % of the vote.
Republican Incumbent Bill Landen won the election with no challengers.
Republican Incumbent Drew Perkins won the election with no challengers.