County Assessor
Ada County, Idaho
My vote power
Normal
Election date
November 3, 2026 · General election
How do we calculate my vote power?
What goes into the rating: Representation: how much weight one vote carries here compared with a statewide vote — the smaller the district, the more each vote counts. Decisiveness: how likely this race is to be close, based on past results or current analyst ratings, plus the number of candidates.
Representation: Normal · 56 out of 100
This district covers a large share of its state, so each vote carries about average weight — like a vote in a statewide race. About 518,935 people live here.
Show the representation math
score = 50 + 50 × ln(state population ÷ this district's) ÷ ln(50,000) = 50 + 50 × ln(1,934,262 ÷ 518,935) ÷ ln(50,000) = 56.08, measured against a statewide vote in ID (grades: 66+ high, 33+ normal, otherwise low; a statewide race is the 50 baseline)
Decisiveness: Unknown
No analyst ratings or past results for this contest yet.
Normal representation → My vote power: Normal.
Some data is missing, so this rating is based on partial information.
About this office
- Setting the value of your home or land for tax purposes
- Approving property tax exemptions, such as homeowner or veteran discounts
- Keeping property maps and assessment records
Affects: Anti-Corruption, Government Efficiency, Housing Affordability,
Candidates
Democratic · declared
Erik Olson is chairman of the Idaho Soil & Water Conservation Commission and a Democratic candidate for Ada County Assessor. He previously worked as a policy analyst for the Idaho Governor’s Office of Energy and Mineral Resources and as a legislative analyst for Washington’s Department of Licensing.
Republican · Incumbent · declared
Rebecca Arnold is the incumbent Ada County Assessor and the Republican nominee for the 2026 general election.
Records: Government Efficiency 1 for
Sources: results.voteidaho.gov · voteidaho.gov