Minnesota Statutes 206.89 states that after every state general election, Minnesota counties perform a post-election review of election results returned by the optical scan ballot counters used in the state. The review is a hand count of the ballots for each eligible election (U.S. President, U.S. Senator, U.S. Representative, and Governor) in the selected precincts compared with the results from the voting system used in those precincts.
At the canvass of the state primary, the county canvassing board (the board that certifies federal, state and county election results in that county) in each county must set the date, time, and place for the post-election review of the general election, and notify the Secretary of State.
At the canvass of the state general election, the county canvassing boards must randomly select the precincts to be reviewed, and notify the Secretary of State.
At least one precinct selected in each county must have had more than 150 votes cast at the general election.
The county auditor must notify the Secretary of State of the precincts chosen for review, along with the time and place the review will be conducted as soon as the decisions are made.
For 2020, the post-election review is mandated for the election for U.S. President, U.S. Senator, and U.S. Representative. The dates and locations for each county's post-election review, and review results are in the following linked spreadsheets.
For 2018, the post-election review is mandated for the election for U.S. Senator, U.S. Senator (special election), U.S. Representative, and Minnesota Governor. The dates and locations for each county's post-election review, precincts reviewed, and review results are in the following linked spreadsheets.
The Secretary of State must monitor and evaluate election procedures in the precincts audited in the post-election review. At least four precincts in each congressional district must be reviewed. The precincts must be chosen by lot by the State Canvassing Board at its meeting to canvass the state general election. (Minnesota Statutes 206.895)