Minn. Stat. § 204C.24
Subd. 1. Information requirements.
Precinct summary statements must be submitted by the election judges in every precinct. For all elections, the election judges must complete three or more copies of the summary statements, and each copy must contain the following information for each kind of ballot:
(9) the number of voting booths used in that precinct on election day.
At least two copies of the summary statement must be prepared for elections not held on the same day as the state elections.
Subd. 2. Sealing in envelopes.
The election judges shall place a full set of completed summary statements in each of three separate envelopes and seal them so that the envelopes cannot be opened without leaving evidence that they have been opened. The election judges shall then sign each envelope over the sealed part so that no envelope can be opened without disturbing the continuity of the signatures. Each of the envelopes shall show substantially the following information on its face:
"Summary statements of the returns of the .... election precinct, (Town) or (City) of ....., or (School District Number) ...., in the County of ....., State of Minnesota."