Senate Rule S50-210. Pairs -- Committee of the Whole restriction. (1) Two Senators may pair on a question that will be determined by a majority vote. On a question requiring a two-thirds vote for adoption, three Senators may pair, with two Senators for the question and one Senator against. Pairing is permitted only when one of the paired Senators is excused when the vote is taken.
(2) An agreement to pair must be in writing and dated and signed by the Senators agreeing to be bound and must specify the duration of the pair. When an agreement to pair is filed with the Secretary of the Senate, it binds the Senators signing until the expiration of time for which it was signed, unless the paired Senators sooner appear and ask that the agreement be canceled.
(3) Pairs in Committee of the Whole are prohibited.