RSA 667:21 Date, Call and Purposes.

I. Not earlier than the third Tuesday of September following any primary, and not later than the last Tuesday of October, upon the call of the chairman of the state committee of the party, the nominees of each party for the offices of governor, United States senator, United States representative, executive councilors, state senators, county officers, representatives, state delegates elected, the incumbent United States senator or senators and the incumbent county commissioners serving 4-year terms, if any, whose term or terms shall not expire during the January following that year's general election, shall meet in state convention for the purpose of adopting the platform of their party, nominating presidential electors and effecting an organization for the following 2 years. The nam