PORTSMOUTH, N.H. (AP) — A county commissioner and school board member says he's seeking the Republican nomination for the state's 1st Congressional District in 2018.

Mark Hounsell, of Conway, is Carroll County commissioner and a Conway School Board member. He's also a labor representative to the state's Public Employee Labor Relations Board. The 65-year-old Hounsell was a state senator in the 1980s.

Hounsell joins two other Republicans to follow Democratic Rep. Carol Shea-Porter, who's stepping down after her term ends. They are state Sen. Andy Sanborn of Bedford and former Liquor Commission Chief of Enforcement Eddie Edwards.

Democrats running include businessman Deaglan McEachern; state Rep. Mindi Messmer; Executive Councilor Chris Pappas; former AFL-CIO head Mark MacKenzie; former Somersworth Mayor Lincoln Soldati; Rochester City Attorney Terence O'Rourke, and former Marine Maura Sullivan.