Minn. Stat. § 10A.257

§ Subdivision 1. Unused funds. After all campaign expenditures and noncampaign disbursements for an election cycle have been made, an amount up to 25 percent of the election cycle expenditure limit for the office may be carried forward. Any remaining amount up to the total amount of the public subsidy from the state elections campaign fund must be returned to the state treasury for credit to the general fund under section 10A.324 . Any remaining amount in excess of the total public subsidy must be contributed to the state elections campaign account or a political party for multicandidate expenditures as defined in section 10A.275 .

§ Subd. 2. Unused postage and credit balances carried forward. Postage that is purchased but not used during an election cycle and credit balances at vendors that exceed a combined total of $500 must be carried forward and counted as expenditures during the election cycle during which they are used.