2018Flipped from RepublicanFinal resultsIncumbent defeated
2018 election for New Hampshire House District 904
New Hampshire House of Representatives · New Hampshire
Gary Merchant (D) won with 57.3% of the vote, defeating John J. Oconnor (R) by 14.8 points, a seat Republicans won last time.
Gary MerchantDemocrat · winner
57.3%883
John J. OconnorRepublican · incumbent
42.5%655
1,542 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