Mich. Comp. Laws § 168.871a
If a proper challenge is raised by a candidate or an elector interested in a ballot question during a recount being conducted by the board of state canvassers, a member of the board of state canvassers or other representative designated by the board of state canvassers under section 890 shall resolve that challenge before the recount is completed in that county. A candidate or elector interested in a ballot question who is involved in the recount and who disagrees with the resolution of the challenge may petition the state board of canvassers for a de novo review of the challenge. The candidate or elector shall file a petition disagreeing with the resolution of a challenge not later than 5 business days after the board of state canvassers mails notice that the recount has been completed to the candidates or electors. Upon receipt of a petition disagreeing with the resolution of a challenge under this section, the board of state canvassers shall notify all candidates and electors involved in the recount of the date of the hearing of the board of state canvassers to consider the petition. The board of state canvassers shall allow the candidates and electors involved in the recount to present oral or written, or both, arguments on the challenge at the hearing. The board of state canvassers shall rule on the challenge at that meeting.
MCL 168.871a