Mark S. Mackenzie
New Hampshire State Representative, District since 2016. Lost the 2026 race for New Hampshire House of Representatives: Hillsborough 40.
- In office
- 9 yrs
- Since 2016
- Bills became law
- 0
- 2 sponsored, 2025–2026 session
- Last margin
- −0.2
- Won 2024
Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Oct 27, 2026, 1:51 PM ET
Committees
As of 2026-10.
- Labor, Industrial and Rehabilitative Services
Source: Open States committeesUpdated Oct 27, 2026, 9:43 AM ET
Legislation
Failed in committee Feb 2026
Failed in committee Feb 2026
Source: Open States billsUpdated Nov 6, 2026, 4:22 PM ET
Career
Offices held, and every time Mackenzie 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 | New Hampshire House of Representatives: Hillsborough 40 | Lost | — | D+2.8 | — |
| 2024 | New Hampshire House of Representatives, HILLSBOROUGH 040 | Won | R+0.2 | — | — |
| 2022 | New Hampshire House of Representatives, HILLSBOROUGH 40 | Won | D+1.1 | — | — |
| 2016 | New Hampshire House of Representatives, District 517 | Won | D+3.1 | — | — |
Source: 99chambers results archive; 2026: civicAPI (unofficial)Updated Nov 8, 2026, 7:01 PM ET
Seats Mackenzie has held
- New Hampshire House of Representatives, District HILLSBOROUGH 040 · since 2024
- New Hampshire House of Representatives, District HILLSBOROUGH 40 · since 2022
- New Hampshire House of Representatives, District 517 · since 2016
Source: 99chambers results archive
Who Mackenzie has run against
- Democratic (D) · 2026 general, lost
- Erin Kerwin (D) · 2024 election, won
- Matt Wilhelm (D) · 2022 election, won
- Timothy J. Smith (D) · 2016 election, won
Source: 99chambers results archive; 2026: civicAPI (unofficial)
How we know Mackenzie
One person, matched across every source we use.
- Open States ocd-person/69275b32-0ad6-48a4-9787-bf2869573772
- Wikidata Q56600141
Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Oct 27, 2026, 1:51 PM ET