Frank Guinta (R) - Manchester Mayor
Sean Mahoney (R) - Republican National Committeeman
Steve Merrill (R) - Ex-Governor & Ex-Attorney General
Tom Rath (R) - Ex-Attorney General, Ex-RNC Member & Political Consultant
John Stephen (R) - Ex-State HHS Commissioner, Attorney & '02/'08 Congressional Candidate
Those sound like "credible" candidates to me. Yet some New Hampshire Republicans believe the only candidates capable of running for Senate have the last names Gregg, Sununu, and Bass. Must be a "born to lead by royal birthright" sorta thing with their talents. (Can't let mere morals have a shot at running, you know.)
Guinta is a very good choice, but it looks like he’ll run against Carol Shea-Porter. Steve Merrill is my first choice. I’d say Sununu is my third choice.