N.Y. Judiciary Law § 246: Oath to members of the court

§ 246. Oath to members of the court. At the time and place appointed,

and before the court proceeds to act upon the impeachment, the clerk

must administer to the presiding judge, and the presiding judge to each

of the members of the court then present, an oath or affirmation truly

and impartially to try and determine the impeachment; and no member of

the court can act or vote upon the impeachment, or any question arising

thereon, without having taken this oath or affirmation.