Diane Larson
North Dakota State Senator, District 30 since 2016. Next on the ballot in 2028.
- In office
- 9 yrs
- Since 2016
- Bills became law
- 1
- 4 sponsored, 2025–2026 session
- Votes missed
- 1.9%
- Chamber median 1.2%
- With party
- 79%
- On votes splitting the parties
- Last margin
- +47.9
- 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.
- Judiciary · chair
- Emergency Response Services
- Judiciary
- Protection and Victim Services
- Rules
- Workforce Development
Source: Open States committeesUpdated Oct 27, 2026, 9:43 AM ET
Legislation
Became law Mar 2025
Source: Open States billsUpdated Nov 6, 2026, 4:22 PM ET
Voting record
Where Larson sits in the North Dakota State Senate
Larson is closer to the center than 45% of the chamber's Republicans.
Closest: Mike Dwyer, Terry Wanzek, Scott Meyer
Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 4:56 PM ET
With Larson’s party
- Votes with the chamber's Republicans79%
- Cosponsorships of the other party's bills7%
Black tick: the average of Republicans in the North Dakota State Senate.
Source: 99chambers legislative scores from roll calls and cosponsorships
Key votes
Votes chosen for their effect, not their side: Larson’s vote, each party’s majority, and the result. An orange vote differs from most Republicans.
| Date | Bill | Larson | Rep. majority | Dem. majority | Result |
|---|---|---|---|---|---|
| Jan 23, 2026 | HB 1624: A BILL for an Act to create and enact two new sections to chapter 15.1-07 of the North… | Yes | No | Yes | Failed 22–24 |
| May 3, 2025 | HB 1459: AN ACT to create and enact a new section to chapter 38-12 of the North Dakota Century… | No | Yes | No | Passed 27–19 |
| Apr 25, 2025 | HB 1143: AN ACT to provide an appropriation to the agriculture commissioner for a food… | Not voting | Yes | Yes | Passed 36–9 |
| Apr 22, 2025 | HB 1015: AN ACT to provide an appropriation for defraying the expenses of the various divisions… | Yes | Yes | No | Failed 23–24 |
| Apr 18, 2025 | HB 1298: AN ACT to amend and reenact sections 39-06.1-06, 39-09-02, 39-09-04, and 39-09-07.1, and… | Yes | Yes | Yes | Passed 25–21 |
Source: 99chambers key votes from Congress.gov, Voteview and Open States roll calls
Career
Offices held, and every time Larson 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.
| Year | Race | Result | Margin |
|---|---|---|---|
| 2024 | North Dakota State Senate, District 30 | Won | R+47.9 |
| 2020 | North Dakota State Senate, District 30 | Won | — |
| 2016 | North Dakota State Senate, District 30 | Won | R+41.5 |
| 2012 | North Dakota House of Representatives, District 30 | Won | D+1.1 |
Source: 99chambers results archive
Seats Larson has held
- North Dakota State Senate, District 30 · since 2016
- North Dakota House of Representatives, District 30 · 2012–2016
Source: 99chambers results archive
Who Larson has run against
- Matthew Zimny (D) · 2024 general, won
- Chris Rausch (D) · 2016 general, won
- Mike Nathe (R) · 2012 general, won
Source: 99chambers results archive
How we know Larson
One person, matched across every source we use.
- Open States ocd-person/9844a188-809c-4711-8147-2c30206721ee
Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Oct 27, 2026, 9:43 AM ET