Article IV § 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.

Proposal 18-2 also amends art 4, §§ 1, 3, 4, 5, & 6; art 5, §§ 1, 2, & 4; art 6, §§ 1 & 4

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.

Senatorial districts, apportionment factors.

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.

Apportionment rules.

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.

Proposal 18-2 also amends art 4, §§ 1, 3, 4, 5, & 6; art 5, §§ 1, 2, & 4; art 6, §§ 1 & 4

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.

Senatorial districts, apportionment factors.

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.

Apportionment rules.

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.

The senate shall consist of 34 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. Senators shall be elected for 2 years and by single districts. Such districts shall be numbered from 1 to 34, inclusive, and shall consist of the territory within the boundary lines of the counties existing at the time of the adoption of this amendment, as follows: First through fifth, eighteenth, twenty-first, Wayne county; nineteenth, Lenawee and Monroe counties; tenth, Jackson and Hillsdale counties; ninth, Calhoun and Branch counties; sixth, Kalamazoo and St. Joseph counties; seventh, Cass and Berrien counties; eighth, Van Buren, Allegan and Barry counties; fourteenth, Ingham and Livingston counties; twelfth, Oakland county; eleventh, Macomb county; twentieth, Tuscola, Sanilac and Huron counties; thirteenth, Genesee county; fifteenth, Clinton, Shiawassee and Eaton counties; sixteenth and seventeenth, Kent county; twenty-third, Muskegon and Ottawa counties; twenty-fifth, Mecosta, Montcalm, Gratiot and Ionia counties; twenty-second, Saginaw county; twenty-fourth, Bay, Midland and Isabella counties; twenty-sixth, Newaygo, Oceana, Mason, Lake and Manistee counties; twenty-eighth, Osceola, Clare, Gladwin, Arenac, Iosco, Ogemaw, Roscommon, Crawford, Oscoda and Alcona counties; twenty-seventh, Missaukee, Wexford, Benzie, Grand Traverse, Kalkaska, Leelanau and Antrim counties; twenty-ninth, Charlevoix, Emmet, Cheboygan, Otsego, Montmorency, Alpena and Presque Isle counties; thirtieth, Chippewa, Mackinac, Luce, Schoolcraft, Alger, Menominee and Delta counties; thirty-first, Marquette, Dickinson, Iron and Gogebic counties; thirty-second, Baraga, Keweenaw, Houghton and Ontonagon counties; thirty-third, Washtenaw county; thirty-fourth, Lapeer and Saint Clair counties. Each of the 34 districts shall elect 1 senator.

Senatorial districts, apportionment factors.

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.

Apportionment rules.

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 2 two or more senators shall be divided into senatorial districts as herein provided equal to the number of senators to be elected single member districts.; The population of said such districts shall contain be as nearly as may be an equal number of inhabitants 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. and Each such district shall consist of convenient and contiguous territory follow incorporated city or township boundary lines to the extent possible and shall be compact, contiguous, and as nearly uniform in shape as possible; and said districts shall be arranged during the year 1953, by the board of supervisors in such counties assembled at such time and place as prescribed by law.

The senate shall consist of 34 members. Senators shall be elected for 2 years and by single districts. Such districts shall be numbered from 1 to 34, inclusive, and shall consist of the territory within the boundary lines of the counties existing at the time of the adoption of this amendment, as follows: First through fifth, eighteenth, twenty-first, Wayne county; nineteenth, Lenawee and Monroe counties; tenth, Jackson and Hillsdale counties; ninth, Calhoun and Branch counties; sixth, Kalamazoo and St. Joseph counties; seventh, Cass and Berrien counties; eighth, Van Buren, Allegan and Barry counties; fourteenth, Ingham and Livingston counties; twelfth, Oakland county; eleventh, Macomb county; twentieth, Tuscola, Sanilac and Huron counties; thirteenth, Genesee county; fifteenth, Clinton, Shiawassee and Eaton counties; sixteenth and seventeenth, Kent county; twenty-third, Muskegon and Ottawa counties; twenty-fifth, Mecosta, Montcalm, Gratiot and Ionia counties; twenty-second, Saginaw county; twenty-fourth, Bay, Midland and Isabella counties; twenty-sixth, Newaygo, Oceana, Mason, Lake and Manistee counties; twenty-eighth, Osceola, Clare, Gladwin, Arenac, Iosco, Ogemaw, Roscommon, Crawford, Oscoda and Alcona counties; twenty-seventh, Missaukee, Wexford, Benzie, Grand Traverse, Kalkaska, Leelanau and Antrim counties; twenty-ninth, Charlevoix, Emmet, Cheboygan, Otsego, Montmorency, Alpena and Presque Isle counties; thirtieth, Chippewa, Mackinac, Luce, Schoolcraft, Alger, Menominee and Delta counties; thirty-first, Marquette, Dickinson, Iron and Gogebic counties; thirty-second, Baraga, Keweenaw, Houghton and Ontonagon counties; thirty-third, Washtenaw county; thirty-fourth, Lapeer and Saint Clair counties. Each of the 34 districts shall elect 1 senator. Counties entitled to 2 or more senators shall be divided into senatorial districts as herein provided equal to the number of senators to be elected; said districts shall contain as nearly as may be an equal number of inhabitants and shall consist of convenient and contiguous territory; and said districts shall be arranged during the year 1953, by the board of supervisors in such counties assembled at such time and place as prescribed by law.

Proposal No. 3 also amends art 5, §§ 3 & 4

The senate shall consist of thirty-two 34 members. Senators shall be elected for two 2 years and by single districts. Such districts shall be numbered from one 1 to thirty-two 34, inclusive, and shall consist of the territory within the boundary lines of the counties existing at the time of the adoption of this amendment, as follows: First through fifth, eighteenth, twenty-first, Wayne county; nineteenth, Lenawee and Monroe counties; tenth, Jackson and Hillsdale counties; ninth, Calhoun and Branch counties; sixth, Kalamazoo and St. Joseph counties; seventh, Cass and Berrien counties; eighth, Van Buren, Allegan and Barry counties; fourteenth, Ingham and Livingston counties; twelfth, Oakland county; eleventh, Macomb county; twentieth, Tuscola, Sanilac and Huron counties; thirteenth, Genesee county; fifteenth, Clinton, Shiawassee and Eaton counties; sixteenth and seventeenth, Kent county; twenty-third, Muskegon and Ottawa counties; twenty-fifth, Mecosta, Montcalm, Gratiot and Ionia counties; twenty-second, Saginaw county; twenty-fourth, Bay, Midland and Isabella counties; twenty-sixth, Newaygo, Oceana, Mason, Lake and Manistee counties; twenty-eighth, Osceola, Clare, Gladwin, Arenac, Iosco, Ogemaw, Roscommon, Crawford, Oscoda and Alcona counties; twenty-seventh, Missaukee, Wexford, Benzie, Grand Traverse, Kalkaska, Leelanau and Antrim counties; twenty-ninth, Charlevoix, Emmet, Cheboygan, Otsego, Montmorency, Alpena and Presque Isle counties; thirtieth, Chippewa, Mackinac, Luce, Schoolcraft, Alger, Menominee and Delta counties; thirty-first, Marquette, Dickinson, Iron and Gogebic counties; thirty-second, Baraga, Keweenaw, Houghton and Ontonagon counties; thirty-third, Washtenaw county; thirty-fourth, Lapeer and Saint Clair counties. Each of which the 34 districts shall choose elect one 1 senator. No county shall be divided in the formation of senatorial districts, unless such county shall be equitably entitled to two or more senators. Counties entitled to 2 or more senators shall be divided into senatorial districts as herein provided equal to the number of senators to be elected; said districts shall contain as nearly as may be an equal number of inhabitants and shall consist of convenient and contiguous territory; and said districts shall be arranged during the year 1953, by the board of supervisors in such counties assembled at such time and place as prescribed by law.

Proposal No. 3 also amends art 5, §§ 3 & 4

The senate shall consist of thirty-two members. Senators shall be elected for two years and by single districts. Such districts shall be numbered from one to thirty-two, inclusive, each of which shall choose one senator. No county shall be divided in the formation of senatorial districts, unless such county shall be equitably entitled to two or more senators.

The senate shall consist of thirty-two members. Senators shall be elected for two years, and by single districts. Such districts shall be numbered from one to thirty-two, inclusive;, each of which shall choose one senator. No county shall be divided in the formation of Senate senatorial districts, except unless such county shall be equitably entitled to two or more senators.

The Senate shall consist of thirty-two members. Senators shall be elected for two years, and by single districts. Such districts shall be numbered from one to thirty-two inclusive; each of which shall choose one Senator. No county shall be divided in the formation of Senate districts, except such county shall be equitably entitled to two or more Senators.

§ 2: The number of the members of the House of Representatives shall never be less than forty-eight, nor more than one hundred; and the Senate shall, at all times, equal in number one-third of the House of Representatives, as nearly as may be.

§ 5: The Senators shall be chosen for two years, at the same time, and in the same manner, as the Representatives are required to be chosen. At the first session of the Legislature, under this constitution, they shall be divided by lot from their respective districts, as nearly as may be, into two equal classes; the seats of the Senators of the first class shall be vacated at the expiration of the first year, and of the second class at the expiration of the second year, so that one-half thereof, as nearly as may be, shall be chosen annually thereafter.

§ 6: The State shall be divided, at each new apportionment, into a number not less than four, nor more than eight, senatorial districts, to be always composed of contiguous territory, so that each district shall elect an equal number of Senators annually, as nearly as may be; and no county shall be divided in the formation of such districts.

See also: Const 1963, art 2, § 5 and art 4, § 3