2012 Michigan Compiled Laws
Chapter 1 — Constitution of the State of Michigan of 1963
CONSTITUTION OF MICHIGAN OF 1963 — STATE CONSTITUTION (Article I § 1 - § 0)
CONSTITUTION-IV — ARTICLE IV LEGISLATIVE BRANCH (Article IV § 1...§ 54)
Article IV § 2 — Senators, number, term.

Sec. 2.

The senate shall consist of 38 members to be elected from single member districts at the same election as the governor for four-year terms concurrent with the term of office of the governor.

In districting the state for the purpose of electing senators after the official publication of the total population count of each federal decennial census, each county shall be assigned apportionment factors equal to the sum of its percentage of the state's population as shown by the last regular federal decennial census computed to the nearest one-one hundredth of one percent multiplied by four and its percentage of the state's land area computed to the nearest one-one hundredth of one percent.

In arranging the state into senatorial districts, the apportionment commission shall be governed by the following rules:

(1) Counties with 13 or more apportionment factors shall be entitled as a class to senators in the proportion that the total apportionment factors of such counties bear to the total apportionment factors of the state computed to the nearest whole number. After each such county has been allocated one senator, the remaining senators to which this class of counties is entitled shall be distributed among such counties by the method of equal proportions applied to the apportionment factors.

(2) Counties having less than 13 apportionment factors shall be entitled as a class to senators in the proportion that the total apportionment factors of such counties bear to the total apportionment factors of the state computed to the nearest whole number. Such counties shall thereafter be arranged into senatorial districts that are compact, convenient, and contiguous by land, as rectangular in shape as possible, and having as nearly as possible 13 apportionment factors, but in no event less than 10 or more than 16. Insofar as possible, existing senatorial districts at the time of reapportionment shall not be altered unless there is a failure to comply with the above standards.

(3) Counties entitled to two or more senators shall be divided into single member districts. The population of such districts shall be as nearly equal as possible but shall not be less than 75 percent nor more than 125 percent of a number determined by dividing the population of the county by the number of senators to which it is entitled. Each such district shall follow incorporated city or township boundary lines to the extent possible and shall be compact, contiguous, and as nearly uniform in shape as possible.

History: Const. 1963, Art. IV, § 2, Eff. Jan. 1, 1964
Constitutionality: The United States Supreme Court held in Reynolds v Sims, 377 US 533; 84 S Ct 1362; 12 L Ed 2d 506 (1964) that provisions establishing weighted land area-population formulae violate the Equal Protection Clause of the United States Constitution. Because the apportionment provisions of art 4, §§ 2 - 6 are interdependent and not severable, the provisions are invalidated in their entirety and the Commission on Legislative Apportionment cannot survive. In re Apportionment of State Legislature 1982, 413 Mich 96; 321 NW2d 565 (1982), rehearing denied 413 Mich 149; 321 NW2d 585; stay denied 413 Mich 222; 321 NW2d 615, appeal dismissed 459 US 900; 103 S Ct 201; 74 L Ed 2d 161.
Former Constitution: See Const. 1908, Art. V, § 2.