John K. O'Brien
Vermont State Representative, District YO1 since 2018. Ran in 4 elections between 2018 and 2024, winning 4. Re-elected in 2026. Next on the ballot in 2028.
Vermont State Representative, District YO1Born 1962Film director
- In office
- 7 yrs
- Since 2018
- Bills became law
- 4
- 32 sponsored, 2025–2026 session
- Votes missed
- 22.7%
- Chamber median 4.0%
- With party
- 76%
- On votes splitting the parties
- Last margin
- +13.7
- Won 2026
- Next election
- 2028
- Nov 7, 2028
Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Oct 27, 2026, 1:51 PM ET
Committees
As of 2026-10.
- Agriculture, Food Resiliency and Forestry
Source: Open States committeesUpdated Oct 27, 2026, 9:43 AM ET
Legislation
Became law Jun 2025
Source: Open States billsUpdated Nov 6, 2026, 4:22 PM ET
Voting record
Where O'Brien sits in the Vermont House of Representatives
O'Brien is closer to the center than 96% of the chamber's Democrats.
Closest: Dan Noyes, Laura Sibilia, Monique Priestley
Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 5:08 PM ET
With O'Brien’s party
- Votes with the chamber's Democrats76%
Black tick: the average of Democrats in the Vermont House of Representatives.
Source: 99chambers legislative scores from roll calls and cosponsorships
Key votes
Votes chosen for their effect, not their side: O'Brien’s vote, each party’s majority, and the result. An orange vote differs from most Democrats.
| Date | Bill | O'Brien | Dem. majority | Rep. majority | Result |
|---|---|---|---|---|---|
| May 28, 2026 | S 64: An act relating to amendments to the scope of practice for optometrists | Yes | Yes | Yes | Passed 93–38 |
| May 26, 2026 | H 527: An act relating to extending the sunset of 30 V.S.A. § 248a | No | No | Yes | Failed 52–89 |
| May 19, 2026 | S 212: An act relating to potable water supply and wastewater system connections | Yes | No | Yes | Failed 63–74 |
| May 7, 2026 | S 209: An act relating to prohibiting civil arrest in sensitive locations | Yes | Yes | No | Passed 109–30 |
| May 6, 2026 | S 325: An act relating to regional planning and Act 250 Tier jurisdiction | Yes | No | Yes | Failed 66–76 |
Source: 99chambers key votes from Congress.gov, Voteview and Open States roll calls
Career
Offices held, and every time O'Brien 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 | Seat | +/− |
|---|---|---|---|---|---|
| 2026 | Vermont House of Representatives, HD-YO1 | Won | D+13.7 | D+28.5 | −14.8 |
| 2024 | Vermont House of Representatives, YO1 | Won | D+2.4 | D+28.5 | −26.1 |
| 2022 | Vermont House of Representatives, YO1 | Won | — | D+28.4 | — |
| 2020 | Vermont House of Representatives, YO1 | Won | — | — | — |
| 2018 | Vermont House of Representatives, YO1 | Won | D+25.7 | — | — |
Source: 99chambers results archive; 2026: Vermont Secretary of State (unofficial)Updated Nov 8, 2026, 7:01 PM ET
Seats O'Brien has held
- Vermont House of Representatives, District YO1 · since 2018
Source: 99chambers results archive
Who O'Brien has run against
- Bruce Post (R) · 2026 election, won
- David M. Ainsworth (R) · 2018 election, won
Source: 99chambers results archive; 2026: Vermont Secretary of State (unofficial)
How we know O'Brien
One person, matched across every source we use.
- Open States ocd-person/6b0c1c32-609e-4d13-a9c5-699b73bd1470
- Wikidata Q15490881
Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Oct 27, 2026, 1:51 PM ET