Wyoming State Senator District 21
August 18, 2026 · State Senate District 21; Wyoming · State senate district · primary
How do we calculate vote impact?
Vote impact = representation (how much weight one vote carries here, the smaller the district's population, the higher the representation) + decisiveness (how likely this race is to be close, based on past results and number of candidates).
Representation: Low · 21 out of 100
This district is large for its type, so each vote is a smaller slice of the outcome. About 19,787 people live here.
score = 100 × ln(largest population ÷ this district's) ÷ ln(largest ÷ smallest), rounded to 2 decimals = 100 × ln(20,954 ÷ 19,787) ÷ ln(20,954 ÷ 15,997) = 21.23, comparing state senate districts in WY (grades: 66+ high, 33+ average, otherwise low)
Decisiveness: Unknown
No past results for this contest yet.
Low representation + unknown decisiveness → Below average vote impact.
Some data is missing, so this rating is based on partial information and capped at "High".
State Senator is responsible for:
- Voting on state laws and the state budget
- Representing their district in the state senate
- Confirming certain governor appointments in many states
- Helping district residents deal with state agencies
Affected Areas: Environment and Public Health, Reduce Wealth Gap, Anti-Corruption, Government Efficiency, Healthcare Affordability, Government Spending Reduction, Public Safety and Crime Control, Housing Affordability, Social Programs and Welfare, Public Education Quality, Gun Control, Women's Reproductive Rights, Election Integrity, Personal Income Tax Reduction, Data Privacy, Civil Rights, Corporate Accountability, Public Infrastructure
Candidates
Ken Pendergraft
Republican · declared
Ken Pendergraft is the current Republican Wyoming State Representative for District 29 and a candidate for the open Senate District 21 seat. He has served in the House since 2023 and has a professional background in contracting and homebuilding.
Melissa Butcher
Republican · declared
Melissa Butcher is a Sheridan County business owner and public-process facilitator seeking the open Wyoming Senate District 21 seat as a Republican. Her career spans small business, state-government and utility work, economic development, infrastructure, and community planning.
Election sources
Source: sos.wyo.gov
Source: sos.wyo.gov