Horizon · our Election Day forecast: polls, plus fundamentals like incumbency, fundraising and past results.

Pulse · polls only: where the races stand today, with no fundamentals and wider uncertainty.

What's the difference?

New Hampshire · New Hampshire House of Representatives: State House District Merrimack 12 · Updated Oct 16, 2026

Brian Seaworth

RepublicanIncumbent2 seats

Electoral history

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

  1. 2024

    House of Representatives · HD-612 Nov 5, 2024

    R · 26.3% · 2,161 votes

    Won
  2. 2022

    House of Representatives · HD-612 Nov 8, 2022

    R · 25.3% · 1,549 votes

    Won
  3. 2020

    House of Representatives · HD-620 Nov 3, 2020

    R · 19.1% · 3,046 votes

    Won
  4. 2018

    House of Representatives · HD-620 Nov 6, 2018

    R · 17.4% · 1,956 votes

    Won
  5. 2016

    House of Representatives · HD-620 Nov 8, 2016

    R · 17.3% · 2,390 votes

    Won
  6. 2014

    House of Representatives · HD-620 Nov 4, 2014

    R · 17.9% · 1,815 votes

    Won
  7. 2014

    House of Representatives · HD-620 primary · Sep 9, 2014

    R · 40.7% · 615 votes

    Won
  8. 2012

    House of Representatives · HD-620 Nov 6, 2012

    R · 14.5% · 1,979 votes

    Lost
  9. 2010

    House of Representatives · HD-MERRIMACK 7 Nov 2, 2010

    R · 17.7% · 1,743 votes

    Won
  10. 2008

    House of Representatives · HD-MERRIMACK 7 Nov 4, 2008

    R · 14.4% · 1,800 votes

    Lost

Opponents in 2026