Wyoming's 20th State Senate district explained

State:	Wyoming
District:	20
Chamber:	Senate
Image Caption:	Wyoming's 20th State Senate district as of 2022
Representative:	Ed Cooper
Party:	Republican
Residence:	Ten Sleep
Percent White:	86
Percent Hispanic:	9
Percent Native American:	1
Percent Multiracial:	3
Population:	18,011^[1]
Population Year:	2022

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.^[2] It is represented by Republican Senator Ed Cooper of Ten Sleep.^[2] ^[3]

In 1992, the state of Wyoming switched from electing state legislators by county to a district-based system.^[4]

List of members representing the district

Representative	Term	Note
John Rankine	Republican	1993	Elected in 1992.^[5] Resigned in 1993.^[6]
Gerald Geis	Republican	1995 – 2017	Appointed in 1993.^[7] Elected in 1994.^[8] Re-elected in 1996.^[9] Re-elected in 2000.^[10] Re-elected in 2004.^[11] Re-elected in 2008.^[12] Re-elected in 2012.^[13]
Wyatt Agar	Republican	2017 – 2021	Elected in 2016.^[14]
Ed Cooper	Republican	2021 – present	Elected in 2020.^[15] Re-elected in 2024.^[16]

Recent election results

2024

Historical district boundaries

Description	Apportionment Plan	Notes
Hot Springs County Washakie County Big Horn County (part)	1992 Apportionment Plan	^[17]
Hot Springs County Washakie County Big Horn County (part) Park County (part)	2002 Apportionment Plan	^[18] ^[19]
Hot Springs County Washakie County Big Horn County (part) Fremont County (part) Park County (part)	2012 Apportionment Plan	^[20] ^[21]

Notes and References

Web site: State Senate District 20, WY. Wyoming Legislature . November 14, 2024.
Web site: Current Senate Districts. Wyoming Legislature . November 14, 2024.
Web site: Senate District 20: Senator Ed Cooper. Wyoming Legislature . November 14, 2024.
Web site: Wyoming Legislator Database. Wyoming Legislature . November 14, 2024.
News: November 5, 1992. Election Results: State Senate. 13. Casper Star-Tribune. . November 14, 2024.
News: Rankine resigns Senate seat. Casper Star-Tribune. Casper, Wyoming. June 10, 1993. November 14, 2024. 11. Newspapers.com.
News: September 10, 1993. Karpan supports 'affordable' special legislative elections. 1. Casper Star-Tribune. . November 14, 2024.
News: November 10, 1994. Election Results: State Legislature. 13. Casper Star-Tribune. . November 14, 2024.
Web site: Legislative Candidates Abstracts. Wyoming Secretary of State. 1996. 5. November 14, 2024.
Web site: Statewide Legislative Abstract -- General Election -- November 7, 2000. Wyoming Secretary of State. 2000. 4. November 14, 2024.
Web site: Legislative Candidates' Abstract -- Official Wyoming General Election Results -- November 2, 2004. Wyoming Secretary of State. 2004. 3. November 14, 2024.
Web site: Statewide Senate Districts Official Summary. Wyoming Secretary of State. 2008. 5. November 14, 2024.
Web site: Statewide Senate Candidates Official Summary. Wyoming Secretary of State. 2012. 10. November 14, 2024.
Web site: Statewide Senate Candidates Official Summary. Wyoming Secretary of State. 2016. 5. November 14, 2024.
Web site: Statewide Senate Candidates Official Summary. Wyoming Secretary of State. 2020. 5. November 14, 2024.
Web site: 2024 General Election Senate Candidates Summary. Wyoming Secretary of State. 2024. 11. November 14, 2024.
Web site: Map Archive. The American Redistricting Project . November 19, 2024.
Web site: HOUSE BILL NO. 0075. November 14, 2024. https://web.archive.org/web/20021013053558/http://legisweb.state.wy.us/2002/enroll/HEA1_A.pdf. March 1, 2002. October 13, 2002.
Web site: WYOMING REDISTRICTING 2011-2012. Wyoming Legislature. November 14, 2024.
Web site: District: SD20. November 14, 2024. https://web.archive.org/web/20210327074128/https://sos.wyo.gov/Elections/Docs/2012/LegislativeMaps/Senate/SD20.pdf. March 27, 2021.
Web site: Districts and Precincts by Legislative Districts. May 17, 2012. November 14, 2024.