The Ballot Brief
Merrimack County, New Hampshire

New Hampshire House, Merrimack District 12

New HampshireMerrimack County › New Hampshire House, Merrimack District 12

4 candidates are tracked for New Hampshire House, Merrimack District 12 on the November 3, 2026 ballot: Brian Seaworth, Peter L. Mehegan, Mariana R. Beer and Kenneth Nivison. Candidate information follows official Merrimack County election filings; verify with the official election office linked below.

Brian Seaworth (Republican), Peter L. Mehegan (Republican), Mariana R. Beer (Democratic), Kenneth Nivison (Democratic) are on the November 3 ballot for New Hampshire House, Merrimack District 12; Brian Seaworth, Peter L. Mehegan are sitting members, per the General Court's official member list (gc.nh.gov). This is a two-seat district: voters choose up to two candidates, and the top two finishers are elected. Nominees are each party's top finishers in the September 8, 2026 state primary, per the Secretary of State's town-by-town results; nomination-paper candidates are not yet included.

Brian Seaworth

Republican · Incumbent

Brian Seaworth is the Republican nominee for New Hampshire House, Merrimack District 12 on the November 3, 2026 ballot, per the New Hampshire Secretary of State's September 8, 2026 primary results. Brian Seaworth is a sitting member for the district, per the General Court's official member list (gc.nh.gov). This name has not yet been researched.

Peter L. Mehegan

Republican · Incumbent

Peter L. Mehegan is the Republican nominee for New Hampshire House, Merrimack District 12 on the November 3, 2026 ballot, per the New Hampshire Secretary of State's September 8, 2026 primary results. Peter L. Mehegan is a sitting member for the district, per the General Court's official member list (gc.nh.gov). This name has not yet been researched.

Mariana R. Beer

Democratic

Mariana R. Beer is the Democratic nominee for New Hampshire House, Merrimack District 12 on the November 3, 2026 ballot, per the New Hampshire Secretary of State's September 8, 2026 primary results. This name has not yet been researched.

Kenneth Nivison

Democratic

Kenneth Nivison is the Democratic nominee for New Hampshire House, Merrimack District 12 on the November 3, 2026 ballot, per the New Hampshire Secretary of State's September 8, 2026 primary results. This name has not yet been researched.

Verify this race
Candidate roster from official Merrimack County Supervisor of Elections filings, last verified 2026-09-07. Bios and priorities carry their attribution inline.
Cross-check with the official New Hampshire election office, or see the full Merrimack County sample ballot and your exact ballot by address.