He announced definitively Wednesday morning on WGIR's "NH Today With Jack Heath" that he would run against Democratic incumbent Sen. Jeanne Shaheen. Manchester TV station WMUR also confirmed Brown's plans.
Former US Senator Scott Brown just confirmed and announced on NH Today that he is running for the US Senate in NH... http://t.co/56PhJZIdfy
— Jack Heath (@JackHeathRadio) April 2, 2014
Brown had set up an exploratory committee last month to prepare for a challenge to Shaheen, and he was spotted Tuesday on Capitol Hill attending Senate Republicans' weekly lunch.