Carroll County Commissioner Mark Hounsell says he is running for the Republican nomination for New Hampshire's 1st Congressional District.
Hounsell, a former state senator from Conway, joins state Sen. Andy Sanborn of Bedford and former state liquor enforcement chief Eddie Edwards of Dover in the GOP field for the open seat in 2018.
U.S. Rep. Carol Shea-Porter, a Democrat from Rochester, is not running for re-election this year.
Hounsell has served on numerous local and regional boards, including the Conway School Board, and the state Public Employee Labor Relations Board.
The Democrats' field is also expanding. Democrats now declared candidates are: former AFL-CIO president Mark MacKenzie of Manchester, Portsmouth businessman Deaglan McEachern, state Rep. Mindi Messmer of Rye, Rochester City Attorney Terence O'Rourke, Executive Councilor Chris Pappas of Manchester, former Strafford County Attorney and Somersworth Mayor Lincoln Soldati, and Marine Corps veteran Maura Sullivan of Portsmouth.