County Commissioner Chairman
August 4, 2026 · Johnson County, Kansas · County · 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 · 0 out of 100
This district is large for its type, so each vote is a smaller slice of the outcome. About 620,631 people live here.
score = 100 × ln(largest population ÷ this district's) ÷ ln(largest ÷ smallest), rounded to 2 decimals = 100 × ln(620,631 ÷ 620,631) ÷ ln(620,631 ÷ 1,304) = 0, comparing counties in KS (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".
County Commissioner is responsible for:
- Passing county rules and the county budget
- Setting property tax rates that fund county services
- Overseeing county departments such as roads, parks, and public health
- Deciding land use in areas outside city limits
Affected Areas: Environment and Public Health, Government Efficiency, Healthcare Affordability, Government Spending Reduction, Public Safety and Crime Control, Housing Affordability, Social Programs and Welfare, Public Infrastructure
Candidates
Gene Senesac
Nonpartisan · declared
Gene Senesac retired in 2019 after a 37-year career as a director with a global agricultural food processor. He holds a degree in Agricultural Economics from Purdue University and served on Olathe's Street Maintenance Sales Tax Finance Oversight Committee from June 2025 through June 2026.
Karen Crnkovich
Nonpartisan · declared
Karen Crnkovich owns and operates a Kansas City-area heating, cooling, ventilation, and plumbing business. She founded Strong Homes, Strong Families in 2019 and previously served as president of the Junior League of Kansas City, Missouri. Johnson County lists her as the elected Republican precinct committeewoman for Precinct 3010.
Records: Government Efficiency 1 for
Mike Kelly
Nonpartisan · Incumbent · declared
Mike Kelly has served as chairman of the Johnson County Board of County Commissioners since 2023 and previously served as mayor of Roeland Park from 2017 through 2022. He is an attorney focused on real-estate, design, and construction litigation and holds degrees from Kansas State University and the University of Kansas School of Law.
Election sources
Source: jocoelection.org
Source: jocoelection.org