Minn. Stat. § 375B.08: ENLARGING A SUBORDINATE SERVICE DISTRICT.

The county board, on its own motion or pursuant to petition, may enlarge any existing subordinate service district pursuant to the procedures specified in sections 375B.04 to 375B.07. Only qualified voters residing in the district to be added shall be eligible to participate in the election, but if five percent of the qualified voters residing in the existing service district petition to participate in the election, all qualified voters residing in the proposed service district shall be eligible.