# Wyoming's 20th State Senate district

Wyoming's 20th State Senate district is one of 31 districts in the Wyoming Senate. The district encompasses Hot Springs and Washakie counties as well as parts of Big Horn, Fremont and Park counties. It is represented by Republican Senator Ed Cooper of Ten Sleep.
In 1992, the state of Wyoming switched from electing state legislators by county to a district-based system.

## List of members representing the district

| Representative | Party | Term | Note |
| John Rankine | Republican | 1993 | Elected in 1992. Resigned in 1993. |
| Gerald Geis | Republican | 1995 – 2017 | Appointed in 1993. Elected in 1994. Re-elected in 1996. Re-elected in 2000. Re-elected in 2004. Re-elected in 2008. Re-elected in 2012. |
| Wyatt Agar | Republican | 2017 – 2021 | Elected in 2016. |
| Ed Cooper | Republican | 2021 – present | Elected in 2020. Re-elected in 2024. |

## Recent election results
### 2008

Senate district 20 general election :
| Party | Party | Candidate | Votes | % |
| | Republican | Gerald Geis (incumbent) | 7,057 | 98.67% |
| | Write-ins | | 95 | 1.32% |
| Total votes | Total votes | Total votes | 7,152 | 100.0% |
| Invalid or blank votes | Invalid or blank votes | Invalid or blank votes | 995 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2012

Senate district 20 general election :
| Party | Party | Candidate | Votes | % |
| | Republican | Gerald Geis (incumbent) | 7,592 | 98.57% |
| | Write-ins | | 110 | 1.42% |
| Total votes | Total votes | Total votes | 7,702 | 100.0% |
| Invalid or blank votes | Invalid or blank votes | Invalid or blank votes | 1,113 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2016

Senate district 20 general election :
| Party | Party | Candidate | Votes | % |
| | Republican | Wyatt Agar | 6,893 | 81.39% |
| | Democratic | Mary Jane Norskog | 1,546 | 18.25% |
| | Write-ins | | 30 | 0.35% |
| Total votes | Total votes | Total votes | 8,469 | 100.0% |
| Invalid or blank votes | Invalid or blank votes | Invalid or blank votes | 325 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2020

Senate district 20 general election :
| Party | Party | Candidate | Votes | % |
| | Republican | Ed Cooper | 7,497 | 85.03% |
| | Democratic | Theresa Livingston | 1,293 | 14.66% |
| | Write-ins | | 26 | 0.29% |
| Total votes | Total votes | Total votes | 8,816 | 100.0% |
| Invalid or blank votes | Invalid or blank votes | Invalid or blank votes | 275 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2024

Senate district 20 general election :
| Party | Party | Candidate | Votes | % |
| | Republican | Ed Cooper (incumbent) | 8,236 | 97.16% |
| | Write-ins | | 240 | 2.83% |
| Total votes | Total votes | Total votes | 8,476 | 100.0% |
| Invalid or blank votes | Invalid or blank votes | Invalid or blank votes | 1,119 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Historical district boundaries

| Description | Apportionment Plan |
| Hot Springs County Washakie County Big Horn County (part) | 1992 Apportionment Plan |
| Hot Springs County Washakie County Big Horn County (part) Park County (part) | 2002 Apportionment Plan |
| Hot Springs County Washakie County Big Horn County (part) Fremont County (part) Park County (part) | 2012 Apportionment Plan |