Weld County, Colorado

Weld County Assessor

One candidate is tracked for Weld County Assessor on the November 3, 2026 ballot: Jason Marini. Candidate information follows official Weld County election filings; verify with the official election office linked below.

About this race

Incumbent Republican Assessor Jason A. Marini won his party's June 30, 2026 primary unopposed with 32,000 votes; no Democrat filed, per the county's certified primary Election Summary Report (July 16, 2026, marked Official Results). Marini advances as the only major-party nominee found; no minor-party or unaffiliated petition candidate was located as of this writing.

What this office does

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 Weld County votes on this seat. The sitting officeholder, Jason Marini, is on the ballot. One name is on the ballot for this seat.

Colorado › Weld County › Weld County Assessor

Jason Marini

Republican Incumbent

Top priorities

Fair and equitable property valuations
Modernizing office efficiency and transparency through technology
Assisting seniors and veterans with exemption programs

Per the campaign site.

Biography

Marini has lived in Colorado for about 30 years and in Weld County for 15 years, per his campaign site. He has worked more than seven years as Chief Deputy Assessor, handling property valuations, and the site describes his familiarity with the county's agriculture and oil and gas industries, per his campaign site.

Campaign site (opens in a new tab)

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Voting info and more

Questions about this race

Who is running for Weld County Assessor in 2026?

When is the Weld County Assessor election in Colorado?

Election Day is Tuesday, November 3, 2026. Registration deadlines, early voting dates and mail ballot rules for Colorado are on the Colorado election hub at theballotbrief.com.

How do I see my exact Weld 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.

Verify this race

Candidate roster from official Weld County and state election office filings, last verified September 27, 2026. Bios and priorities carry their attribution inline.

Cross-check with the official Colorado election office, or see the full Weld County sample ballot and your exact ballot by address.

The rest of your Weld County ballot

14 tracked races in Weld County, Colorado. Landed here from another county's search? Look up your own ballot below.

Also on your ballot

Colorado Senate District 1 Colorado Senate District 17 Colorado House District 19 See all 14 Weld County races

Candidate profiles

Jason Marini, full profile Official Colorado election office