That’s what the secret, non-descript basement boiler rooms (phone banks) 24/7 at remote locations around the countryare for, each week targetting the next primary or caucus state. Not everything that is out there “meets the eye” so to speak. The nature of the ground game has changed with technology. ;-)
peeples in NH do not answer their phone in the final 2 weeks. Gotta have an organization.
I guess if these phone banks can jigger things so they have a 603 NH area code for caller ID, that would help.