Ketterman is on the November 3, 2026 ballot. Names follow official Columbia County election filings.
Tammy Groom Ketterman is unopposed on the November 3, 2026 ballot for Columbia County Assessor, per the Secretary of State's VoteWA general-election candidate list.
Property assessor. The assessor determines the taxable value of every parcel of real estate and, in many states, of business property, using state-set methods and market data. Those values, multiplied by rates set by other elected bodies, produce property tax bills. The assessor also administers exemptions such as homestead or senior exemptions.
This race. Every voter in Columbia County votes on this seat. One name is on the ballot for this seat.
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Washington › Columbia County › Columbia County Assessor
Ketterman has served as Columbia County Assessor from 2023 to the present and was Chief Deputy Appraiser in the Assessor's Office from 2016 to 2022, per the statement filed for the Washington voters' guide. Ketterman was a residential and farm appraiser for the Walla Walla County Assessor from 1992 to 2000 and holds a Washington Department of Revenue Certificate of Accreditation, per the statement filed for the Washington voters' guide.
Who is running for Columbia County Assessor in 2026?
One candidate is tracked for Columbia County Assessor on the November 3, 2026 ballot: Tammy Groom Ketterman. Candidate information follows official Columbia County election filings; verify with the official election office linked below.
When is the Columbia County Assessor election in Washington?
Election Day is Tuesday, November 3, 2026. Registration deadlines, early voting dates and mail ballot rules for Washington are on the Washington election hub at theballotbrief.com.
How do I see my exact Columbia County ballot?
Enter your ZIP code in the lookup at theballotbrief.com for the statewide and congressional races, or a full street address to add the county, city and district contests for that location.
Candidate roster from official Columbia County and state election office filings, last verified October 26, 2026. Bios and priorities carry their attribution inline.
Cross-check with the official Washington election office, or see the full Columbia County sample ballot and your exact ballot by address.
11 tracked races in Columbia County, Washington. Landed here from another county's search? Look up your own ballot below.