N.Y. Assembly Rules Rule 3, § 3: Multi-sponsorship

§ 3. Multi-sponsorship. a. Any number of members of the Assembly may

join in the multi-sponsorship of a bill. When a bill is first

introduced and before it is printed, the names of all multi-sponsors

shall appear on the printed bill upon the following conditions:

(1) Multi-sponsors shall file a written request to act as such with

the Index Clerk of the Assembly on forms provided. The request so filed

shall indicate that the first name appearing on the bill shall be deemed

the introducer and all others deemed multi-sponsors.

(2) The introducer shall at all times retain exclusive control of the

bill.

(3) After a multi-sponsored bill has been printed, any multi-sponsor

desiring to withdraw from such multi-sponsorship shall file a written

request on forms provided, so that such member's name will be stricken

as a multi-sponsor from the records of the Index Clerk. The printed

bill, however, shall not be reprinted.

b. Members of the Assembly and members-elect may multi-sponsor bills

that have been pre-filed and bills introduced after the opening of each

legislative session upon the following conditions:

(1) After a bill has been introduced and printed and before final

passage any member or members may file with the Index Clerk, on forms

provided, to become a multi-sponsor of such bill, which forms must be

signed by the introducer and the multi-sponsor.

(2) Such bill shall not be reprinted solely for the purpose of adding

or deleting names of multi-sponsors.

(3) The introducer shall at all times retain exclusive control of such

bill.

(4) Any member, having become a multi-sponsor of a bill, may withdraw

from such by filing a written request with the Index Clerk, on forms

provided, requesting such member's name be stricken as a multi-sponsor

from such clerk's records.

(5) Any member who has become a multi-sponsor of a bill in the manner

set forth herein shall have the right to distribute such bill bearing

the endorsement "multi-sponsored by" and insert his or her own name as

multi-sponsor.