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New Hampshire · New Hampshire House of Representatives: Hillsborough 40 · Updated Oct 16, 2026

Mark S. Mackenzie

Democratic3 seats

2026 race · New Hampshire House of Representatives: Hillsborough 40

Likely D

89%11%

Lean D

75%25%
● Erin Kerwin● Bill O'BrienAlso: Carlos Gonzalez (R), Lynne M. Cumming (R), Robert Rivera (R)
Full race forecast

Background

Current office
New Hampshire House of Representatives, HD-Hillsborough 40
Past races on file
3 (3 won)

Links: Candidate list (source)

Electoral history

Earlier races in New Hampshire, newest first, matched by name in the results archive.

  1. 2024

    House of Representatives · HD-HILLSBOROUGH 040 Nov 5, 2024

    D · 14.0% · 9,777 votes

    Won
  2. 2022

    House of Representatives · HD-HILLSBOROUGH 40 Nov 8, 2022

    D · 15.3% · 15,968 votes

    Won
  3. 2016

    House of Representatives · HD-517 Nov 8, 2016

    D · 27.9% · 1,765 votes

    Won

Opponents in 2026