Wyoming State Senate seat · lines in effect since 2022
Wyoming Senate District 20
A district of about 21,000 people, 26% of adults with a bachelor's degree. It votes R+66.8 relative to the nation for president.
2024 election
Nov 5, 2024- Ed Cooper (R) · won97.2%
- Write-ins and other votes (OTH)2.8%
Unopposed.
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 12:13 PM ET
Where it sits among all 31 seats
Every Wyoming State Senate seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.
Democratic
Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Every election for this seat
10 races since 1992. District numbers are redrawn after each census: each group is one set of lines.
| Year | Winner | Runner-up | Won by |
|---|---|---|---|
| Lines first used in 2022 | |||
| 2024 | Ed Cooper (R) | — | Unopposed |
| Lines first used in 2012 | |||
| 2020 | Ed Cooper (R) | Theresa Livingston (D) | 70.4 |
| 2016 | Wyatt Agar (R) | Mary Jane Norskog (D) | 63.1 |
| 2012 | Gerald E. Geis (R) | — | Unopposed |
| Lines first used in 2002 | |||
| 2008 | Gerald E. Geis (R) | — | Unopposed |
| 2004 | Gerald E. Geis (R) | — | Unopposed |
| Lines first used in 1992 | |||
| 2000 | Gerald E. Geis (R) | — | Unopposed |
| 1996 | Gerald E. Geis (R) | — | Unopposed |
| 1994 special | Gerald E. Geis (R) | — | Unopposed |
| 1992 | John Rankine (R) | Mike Hanify (D) | 12.2 |
Won by: the winner's lead over the runner-up, in points of the vote. Source: 99chambers results archive (MEDSL, Klarner, state election offices)
Districts that overlap District 20
The state's districts in other chambers that share residents with this one, and the share of District 20's area in each.
- U.S. House
- WY-AL 100%
Who lives here, compared
Grey bars show the spread of all 31 seats. Small marks are other seats in Wyoming. The black marker is District 20.
Lower than 70% of seats.
Higher than 70% of seats.
Lower than 63% of seats.
Lower than 93% of seats.
Lower than 77% of seats.
Less dense than 97% of seats.
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET
Seats most like this one
Nearest seats on demographics, density and lean.
District 225% college gradsR+72.3Not up in 2026District 3
22% college gradsR+66.1Held RDistrict 30
23% college gradsR+64.1Not up in 2026District 19
30% college gradsR+66.5Held R
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET