DemocratIn office since Nov 2018

Kathleen Riebe

Utah State Senator, District 15 since 2018. Next on the ballot in 2028.

Utah State Senator, District 15

In office
7 yrs
Since 2018
Bills became law
1
11 sponsored, 2025–2026 session
Votes missed
10.1%
Chamber median 7.4%
With party
98%
On votes splitting the parties
Last margin
+14.1
Won 2024
Next election
2028
Nov 7, 2028

Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Oct 27, 2026, 9:43 AM ET

Committees

As of 2026-10.

  • Education
  • Education Confirmation
  • Education Interim
  • Ethics
  • Executive Appropriations
  • Legislative Management
  • Natural Resources, Agriculture and Environment Confirmation
  • Transportation Interim
  • Transportation, Public Utilities, Energy and Technology
  • Transportation, Public Utilities, Energy, and Technology Confirmation

Source: Open States committeesUpdated Oct 27, 2026, 9:43 AM ET

Legislation

2025–2026 session · 11 sponsored · 1 became law
BillIntroCmteSenateHouseLaw
SB 105 Use of Force Amendments
Crimes · Failed in the Senate Mar 2026
SB 243 Tax Increment Amendments
Economic Development · Failed in committee Mar 2026
SB 56 Citizenship Education Amendments
Education · Failed in committee Mar 2026
SB 159 Dyslexia Screening Amendments
Charter Schools · Failed in committee Mar 2026
SB 274 Supplemental Funding for Literacy Coaching
Education · Failed in committee Mar 2026

Source: Open States billsUpdated Nov 6, 2026, 4:22 PM ET

Voting record

2025–2026 session · placement by roll-call votes

Where Riebe sits in the Utah State Senate

Riebe is closer to the center than 17% of the chamber's Democrats.

Dem. medianRep. medianRiebeMore liberalMore conservative

Closest: Stephanie Pitcher, Karen Kwan, Jen Plumb

Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 5:07 PM ET

With Riebe’s party

  • Votes with the chamber's Democrats98%
  • Cosponsorships of the other party's bills100%

Black tick: the average of Democrats in the Utah State Senate.

Source: 99chambers legislative scores from roll calls and cosponsorships

Key votes

Votes chosen for their effect, not their side: Riebe’s vote, each party’s majority, and the result. An orange vote differs from most Democrats.

DateBillRiebeDem. majorityRep. majorityResult
Mar 7, 2026HB 539: Public Safety ModificationsNoNoYesPassed 19–6
Mar 7, 2026SB 242: Transportation AmendmentsNoNoYesPassed 18–9
Mar 6, 2026HB 514: Utah Energy Council AmendmentsNoNoYesPassed 22–5
Mar 6, 2026HB 261: Electronic Information Privacy Act AmendmentsNoNoYesPassed 22–5
Mar 6, 2026HB 219: Higher Education Civics AmendmentsNoNoYesPassed 17–3

Source: 99chambers key votes from Congress.gov, Voteview and Open States roll calls

Career

Offices held, and every time Riebe was on a ballot. Filled marks are general elections won; hollow marks are primaries; an orange outline is a loss.

Source: 99chambers results archive (MEDSL, Klarner, state election offices)

Elections

Margin against the seat’s presidential baseline: how the seat voted for president in the same or nearest year.

YearRaceResultMargin
2024Utah State Senate, District 15WonD+14.1
2023U.S. House, UT-2 (special)LostR+23.4
2020Utah State Senate, District 8WonD+13.2
2018Utah State Senate, District 8LostD+14.2
2018Utah State Senate, District 8 (special)WonD+14.2

Source: 99chambers results archive

Seats Riebe has held

Source: 99chambers results archive

Who Riebe has run against

  • Scott Cuthbertson (R) · 2024 general, won
  • Brian Zehnder (R) · 2020 general, won
  • Brian Zehnder (R) · 2018 general, lost
  • Brian Zehnder (R) · 2018 general, won

Source: 99chambers results archive

How we know Riebe

One person, matched across every source we use.

Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Oct 27, 2026, 9:43 AM ET