New York Laws
Article 270 - Jury Trial--Formation and Conduct of Jury
270.25 - Trial Jury; Peremptory Challenge of an Individual Juror.

(a) Twenty for the regular jurors if the highest crime charged is a
class A felony, and two for each alternate juror to be selected.
(b) Fifteen for the regular jurors if the highest crime charged is a
class B or class C felony, and two for each alternate juror to be
selected.
(c) Ten for the regular jurors in all other cases, and two for each
alternate juror to be selected.
3. When two or more defendants are tried jointly, the number of
peremptory challenges prescribed in subdivision two is not multiplied by
the number of defendants, but such defendants are to be treated as a
single party. In any such case, a peremptory challenge by one or more
defendants must be allowed if a majority of the defendants join in such
challenge. Otherwise, it must be disallowed.

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