N.Y. Senate Rules Rule 10, § 2: Quorum

§ 2. Quorum. a. A majority of all the Senators elected shall

constitute a quorum to do business. In case a less number than a quorum

of the Senate shall convene, those present are authorized to send the

Sergeant at Arms, or any other person, for the absent Senators.

b. The assent of two-thirds of the Senators elected shall be requisite

to every bill appropriating the public moneys or property for local or

private purposes, and to the passage of bills returned by the Governor

without his or her approval.

c. On the final passage of any bill which imposes, continues or

revives a tax, or creates a debt or charge, or makes, continues or

revives any appropriation of public or trust money or property, or

releases, discharges or commutes any claim or demand of the State,

three-fifths of all the members elected to the Senate shall be necessary

to constitute a quorum therein.

d. If, on taking the final question on a bill, it shall appear that a

constitutional quorum is not present, or if the bill requires a vote of

two-thirds of all the Senators elected to pass it, and it appears that

such number is not present, the bill shall retain its place on the

Calendar and be again taken up in its regular order.

e. When any bill requiring the concurrence of two-thirds of the

Senators, or a quorum of three-fifths thereof, is under consideration,

such concurrence or quorum, as the case may be, shall not be requisite

except on the question of its final passage.

f. If at any time during the session of the Senate a question shall be

raised by any Senator as to the presence of a quorum, the Presiding

Officer shall forthwith direct the Secretary to call the roll, and shall

announce the result, and such proceeding shall be without debate; but no

Senator while speaking shall be interrupted by any other Senator raising

the question of a lack of a quorum, and the question as to the presence

of a quorum shall not be raised more often than once in every hour

unless the lack of a quorum shall be disclosed upon a roll call of the

ayes and nays.

g. Whenever upon a roll call any Senator who is upon the floor of the

Senate Chamber refuses to make response when his or her name is called,

it shall be the duty of the Presiding Officer, either upon his or her

own motion or upon the suggestion of any Senator, to request the Senator

so remaining silent to respond to his or her name, and if such Senator

fails to do so, the fact of such request and refusal shall be entered in

the journal, and such Senator shall be counted as present for the

purpose of constituting a quorum.