Michigan Compiled Laws, Chapter 4. Legislature § 4.261

(a) The senate districts shall consist of 38 single-member districts.

(b) The house of representatives districts shall consist of 110 single-member districts.

(c) Senate and house of representatives districts shall be areas of convenient territory contiguous by land. Areas that meet only at the points of adjoining corners are not contiguous.

(d) Senate and house of representatives districts shall have a population not exceeding 105% and not less than 95% of the ideal district size for the senate or the house of representatives unless and until the United States supreme court establishes a different range of allowable population divergence for state legislative districts.

(e) Senate and house of representatives district lines shall preserve county lines with the least cost to the principle of equality of population provided for in subdivision (d).

(f) If it is necessary to break county lines to stay within the range of allowable population divergence provided for in subdivision (d), the fewest whole cities or whole townships necessary shall be shifted. Between 2 cities or townships, both of which will bring the districts into compliance with subdivisions (d) and (h), the city or township with the lesser population shall be shifted.

(g) Within those counties to which there is apportioned more than 1 senate district or house of representatives district, district lines shall be drawn on city and township lines with the least cost to the principle of equality of population between election districts consistent with the maximum preservation of city and township lines and without exceeding the range of allowable divergence provided for in subdivision (d).

(h) If it is necessary to break city or township lines to stay within the range of allowable divergence provided for in subdivision (d), the number of people necessary to achieve population equality shall be shifted between the 2 districts affected by the shift, except that in lieu of absolute equality the lines may be drawn along the closest street or comparable boundary.

(i) Within a city or township to which there is apportioned more than 1 senate district or house of representatives district, district lines shall be drawn to achieve the maximum compactness possible within a population range of 98% to 102% of absolute equality between districts within that city or township.

(j) Compactness shall be determined by circumscribing each district within a circle of minimum radius and measuring the area, not part of the Great Lakes and not part of another state, inside the circle but not inside the district.

(k) If a discontiguous township island exists within an incorporated city or discontiguous portions of townships are split by an incorporated city, the splitting of the township shall not be considered a split if any of the following circumstances exist:

(l) Senate and house districts shall not violate the precedents established in Miller v Johnson, 115 S Ct 2475; 132 L Ed2d 762 (1995); Bush v Vera, 116 S Ct 1941; 135 L Ed2d 248 (1996); and, Shaw v Hunt, 116 S Ct 1894; 135 L Ed2d 207 (1996).