Section 1. The legislative power of this state shall be vested in the senate and assembly.
[Number and terms of senators and assemblymen]
§2. The senate shall consist of fifty members,* except as hereinafter provided. The senators elected in the year one thousand eight hundred and ninety-five shall hold their offices for three years, and their successors shall be chosen for two years. The assembly shall consist of one hundred and fifty members. The assembly members elected in the year one thousand nine hundred and thirty-eight, and their successors, shall be chosen for two years. (Amended by vote of the people November 2, 1937; November 6, 2001.)
§3. The senate districts described in section three of article three of this constitution as adopted by the people on November sixth, eighteen hundred ninety-four are hereby continued for all of the purposes of future reapportionments of senate districts pursuant to section four of this article. (Formerly §3. Repealed and replaced by new §3 amended by vote of the people November 6, 1962.)
[Readjustments and reapportionments; when federal census to control]
§4. Except as herein otherwise provided, the federal census taken in the year nineteen hundred thirty and each federal census taken decennially thereafter shall be controlling as to the number of inhabitants in the state or any part thereof for the purposes of the apportionment of members of assembly and readjustment or alteration of senate and assembly districts next occurring, in so far as such census and the tabulation thereof purport to give the information necessary therefor. The legislature, by law, shall provide for the making and tabulation by state authorities of an enumeration of the inhabitants of the entire state to be used for such purposes, instead of a federal census, if the taking of a federal census in any tenth year from the year nineteen hundred thirty be omitted or if the federal census fails to show the number of aliens or Indians not taxed. If a federal census, though giving the requisite information as to the state at large, fails to give the information as to any civil or territorial divisions which is required to be known for such purposes, the legislature, by law, shall provide for such an enumeration of the inhabitants of such parts of the state only as may be necessary, which shall supersede in part the federal census and be used in connection therewith for such purposes. The legislature, by law, may provide in its discretion for an enumeration by state authorities of the inhabitants of the state, to be used for such purposes, in place of a federal census, when the return of a decennial federal census is delayed so that it is not available at the beginning of the regular session of the legislature in the second year after the year nineteen hundred thirty or after any tenth year therefrom, or if an apportionment of members of assembly and readjustment or alteration of senate districts is not made at or before such a session. At the regular session in the year nineteen hundred thirty-two, and at the first regular session after the year nineteen hundred forty and after each tenth year therefrom the senate districts shall be readjusted or altered, but if, in any decade, counting from and including that which begins with the year nineteen hundred thirty-one, such a readjustment or alteration is not made at the time above prescribed, it shall be made at a subsequent session occurring not later than the sixth year of such decade, meaning not later than nineteen hundred thirty-six, nineteen hundred forty-six, nineteen hundred fifty-six, and so on; provided, however, that if such districts shall have been readjusted or altered by law in either of the years nineteen hundred thirty or nineteen hundred thirty-one, they shall remain unaltered until the first regular session after the year nineteen hundred forty. Such districts shall be so readjusted or altered that each senate district shall contain as nearly as may be an equal number of inhabitants, excluding aliens, and be in as compact form as practicable, and shall remain unaltered until the first year of the next decade as above defined, and shall at all times consist of contiguous territory, and no county shall be divided in the formation of a senate district except to make two or more senate districts wholly in such county. No town, except a town having more than a full ratio of apportionment, and no block in a city nclosed by streets or public ways, shall be divided in the formation of senate districts; nor shall any district contain a greater excess in population over an adjoining district in the same county, than the population of a town or block therein adjoining such district. Counties, towns or blocks which, from their location, may be included in either of two districts, shall be so placed as to make said districts most nearly equal in number of inhabitants, excluding aliens.
No county shall have four or more senators unless it shall have a full ratio for each senator. No county shall have more than one-third of all the senators; and no two counties or the territory thereof as now organized, which are adjoining counties, or which are separated only by public waters, shall have more than one-half of all the senators.
The ratio for apportioning senators shall always be obtained by dividing the number of inhabitants, excluding aliens, by fifty, and the senate shall always be composed of fifty members, except that if any county having three or more senators at the time of any apportionment shall be entitled on such ratio to an additional senator or senators, such additional senator or senators shall be given to such county in addition to the fifty senators, and the whole number of senators shall be increased to that extent.
The senate districts, including the present ones, as existing immediately before the enactment of a law readjusting or altering the senate districts, shall continue to be the senate districts of the state until the expirations of the terms of the senators then in office, except for the purpose of an election of senators for full terms beginning at such expirations, and for the formation of assembly districts. (Amended by vote of the people November 6, 1945.)
[Apportionment of assemblymen; creation of assembly districts]
§5. The members of the assembly shall be chosen by single districts and shall be apportioned by the legislature at each regular session at which the senate districts are readjusted or altered, and by the same law, among the several counties of the state, as nearly as may be according to the number of their respective inhabitants, excluding aliens. Every county heretofore established and separately organized, except the county of Hamilton, shall always be entitled to one member of assembly, and no county shall hereafter be erected unless its population shall entitle it to a member. The county of Hamilton shall elect with the county of Fulton, until the population of the county of Hamilton shall, according to the ratio, entitle it to a member. But the legislature may abolish the said county of Hamilton and annex the territory thereof to some other county or counties.
The quotient obtained by dividing the whole number of inhabitants of the state, excluding aliens, by the number of members of assembly, shall be the ratio for apportionment, which shall be made as follows: One member of assembly shall be apportioned to every county, including Fulton and Hamilton as one county, containing less than the ratio and one-half over. Two members shall be apportioned to every other county. The remaining members of assembly shall be apportioned to the counties having more than two ratios according to the number of inhabitants, excluding aliens. Members apportioned on remainders shall be apportioned to the counties having the highest remainders in the order thereof respectively. No county shall have more members of assembly than a county having a greater number of inhabitants, excluding aliens.
The assembly districts, including the present ones, as existing immediately before the enactment of a law making an apportionment of members of assembly among the counties, shall continue to be the assembly districts of the state until the expiration of the terms of members then in office, except for the purpose of an election of members of assembly for full terms beginning at such expirations.
In any county entitled to more than one member, the board of supervisors, and in any city embracing an entire county and having no board of supervisors, the common council, or if there be none, the body exercising the powers of a common council, shall assemble at such times as the legislature making an apportionment shall prescribe, and divide such counties into assembly districts as nearly equal in number of inhabitants, excluding aliens, as may be, of convenient and contiguous territory in as compact form as practicable, each of which shall be wholly within a senate district formed under the same apportionment, equal to the number of members of assembly to which such county shall be entitled, and shall cause to be filed in the office of the secretary of state and of the clerk of such county, a description of such districts, specifying the number of each district and of the inhabitants thereof, excluding aliens, according to the census or enumeration used as the population basis for the formation of such districts; and such apportionment and districts shall remain unaltered until after the next reapportionment of members of assembly, except that the board of supervisors of any county containing a town having more than a ratio of apportionment and one-half over may alter the assembly districts in a senate district containing such town at any time on or before March first, nineteen hundred forty-six. In counties having more than one senate district, the same number of assembly districts shall be put in each senate district, unless the assembly districts cannot be evenly divided among the senate districts of any county, in which case one more assembly district shall be put in the senate district in such county having the largest, or one less assembly district shall be put in the senate district in such county having the smallest number of inhabitants, excluding aliens, as the case may require. No town, except a town having more than a ratio of apportionment and one-half over, and no block in a city inclosed by streets or public ways, shall be divided in the formation of assembly districts, nor shall any districts contain a greater excess in population over an adjoining district in the same senate district, than the population of a town or block therein adjoining such assembly district. Towns or blocks which, from their location may be included in either of two districts, shall be so placed as to make said districts most nearly equal in number of inhabitants, excluding aliens. Nothing in this section shall prevent the division, at any time, of counties and towns and the erection of new towns by the legislature.
An apportionment by the legislature, or other body, shall be subject to review by the supreme court, at the suit of any citizen, under such reasonable regulations as the legislature may prescribe; and any court before which a cause may be pending involving an apportionment, shall give precedence thereto over all other causes and proceedings, and if said court be not in session it shall convene promptly for the disposition of the same. (Amended by vote of the people November 6, 1945.)
[Definition of inhabitants]
§5-a. For the purpose of apportioning senate and assembly districts pursuant to the foregoing provisions of this article, the term "inhabitants, excluding aliens" shall mean the whole number of persons. (New. Added by vote of the people November 4, 1969.)