Compiled Laws, Chapter 168. Michigan Election Law § 168.663

Sec. 663. The legislative body of each city, village and township shall provide for and cause to be erected in the room where any election is to be held in each election precinct of such city, village or township, a suitable barrier which shall be so placed as to separate from the rest of the room the area in which the election officials, challengers, voting machines or ballot boxes and voting booths, and persons in the actual process of voting, are located. The barrier shall be of a type approved by the secretary of state.