Compiled Laws, Chapter 168. Michigan Election Law § 168.111

Sec. 111. Service of any restraining order may be made personally, as in the case of the service of other process of said court, or such service may be made by registered or certified mail. In cases of emergency, notice of the issuance of a restraining order may be given to the officers to whom the same is directed by telegraph or by telephone in advance of the actual service of said order and, after such notice, whether by telegraph or telephone, said officers shall be charged with the same duty with regard to the preservation of said ballot boxes and the ballots therein as after the service of said order.