2018Flipped from RepublicanFinal resultsIncumbent defeated
2018 election for Vermont House District YO1
Vermont House of Representatives · Vermont
John O'Brien (D) won with 62.7% of the vote, defeating David M. Ainsworth (R) by 25.7 points, a seat Republicans won last time.
John O'BrienDemocrat · winner
62.7%1,157
David M. AinsworthRepublican · incumbent
37.1%684
1,844 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET