County Commissioner, Plymouth County
September 1, 2026 · Plymouth County, Massachusetts · 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 · 23 out of 100
This district is large for its type, so each vote is a smaller slice of the outcome. About 535,075 people live here.
score = 100 × ln(largest population ÷ this district's) ÷ ln(largest ÷ smallest), rounded to 2 decimals = 100 × ln(1,638,365 ÷ 535,075) ÷ ln(1,638,365 ÷ 14,483) = 23.67, comparing counties in MA (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
Anthony Thomas O'Brien, Sr.
Republican · declared
Anthony Thomas O'Brien, Sr. is a Republican candidate for Plymouth County Commissioner. His campaign states that he serves as a Plymouth County Sheriff's Office deputy sheriff and previously served as a county commissioner.
Korey Michael Welch
Republican · declared
Korey Michael Welch is a Republican candidate for Plymouth County Commissioner. Rockland's annual report identifies him as a former selectman.
Rhonda L. Nyman
Democratic · declared
Rhonda L. Nyman is the Democratic candidate for Plymouth County Commissioner. She is Chair of the Hanover Select Board and previously served as a state representative.
Sandra M. Wright
Republican · Incumbent · declared
Sandra M. Wright is the Republican incumbent candidate for Plymouth County Commissioner. Plymouth County identifies her as chair of its Board of Commissioners.
Election sources
Source: sec.state.ma.us
Source: sec.state.ma.us
Source: plymouthcountyma.gov