Massachusetts House of Representatives: 15th Essex District
Massachusetts House of Representatives · Massachusetts
Democratic held the seat for Democrats, winning by 23.8 points over Ronald Heiseler III.
Source: civicAPI unofficial results and race callsUpdated Nov 7, 2026, 7:01 PM ET
Where the race moved
Against the 2024 presidential vote
The seat's recent races
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)
Money in this race
Each line compares the two campaigns on one scale.
Campaign money: Massachusetts Office of Campaign and Political Finance, through Oct 13, 2026.
Source: Massachusetts Office of Campaign and Political Finance campaign filingsUpdated Oct 13, 2026
Pre-election forecast (final, Nov 3)
Our model's last run before Election Day, Nov 3, 2026. It no longer updates.
No Democrat was on the ballot, so the model gave the seat to Ronald Heiseler III without simulating it.
How the forecast works →