N.H. Rev. Stat. § 664:4-b
Surplus campaign contributions and deficits at the end of an election cycle shall be reported as the opening balance in the next election cycle's first statement. Surplus contributions may be used for fund raising activities and any other politically related activity sponsored by the candidate, or for donations to charitable organizations. Such surplus campaign contributions, however, shall not be used for personal purposes or other prohibited expenditures under RSA 664:5. All expenditures shall be reported according to RSA 664:6 through RSA 664:9. Special election cycle surpluses and deficits shall continue to be reported according to RSA 664:6 until a zero balance is reported.
RSA 664:4-b
1989, 212:7. 1992, 91:1. 1995, 276:1, eff. Aug. 19, 1995.