State Senator
August 4, 2026 · State Senate District 10; Missouri · 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 · 11 out of 100
This district is large for its type, so each vote is a smaller slice of the outcome. About 188,126 people live here.
score = 100 × ln(largest population ÷ this district's) ÷ ln(largest ÷ smallest), rounded to 2 decimals = 100 × ln(190,242 ÷ 188,126) ÷ ln(190,242 ÷ 172,690) = 11.55, comparing state senate districts in MO (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
John Wells
Democratic · declared
John Wells is a lifelong Missouri resident with a master's degree in public administration from the University of Missouri and nearly 30 years of experience as a state employee.
Mike Deering
Republican · declared
Mike Deering serves on the Montgomery County R-II Board of Education and is executive vice president of the Missouri Cattlemen's Association. His professional work focuses on agriculture and rural communities.
Tricia Byrnes
Republican · declared
Tricia Byrnes represents District 63 in the Missouri House of Representatives. Before entering public office, she worked in e-commerce marketing for large consumer brands.
Election sources
Source: s1.sos.mo.gov
Source: sos.mo.gov