voting on a motion robert's rules of order
Reconsideration of a motion A matter that was voted on could be brought back again through the motion to reconsider. Under Robert's Rules of Order Newly Revised (RONR), this motion must be made within a limited time after the action on the original motion: either on the same day or in the case of a multi-day session (such as a convention), on the next day within the session in which business is conducted.[3]
Nuclear option The nuclear option is a parliamentary procedure that allows the United States Senate to override a rule or precedent by a simple majority of 51 votes, instead of by a supermajority of 60 votes. The option is invoked by the presiding officer of the body ruling that the validity of a Senate rule or precedent is a constitutional question. The issue is immediately put to the full Senate, which decides by majority vote. The procedure thus allows the Senate to decide any issue by majority vote, regardless of existing procedural rules, such as current Senate rules specifying that ending a filibuster requires the consent of 60 senators (out of 100) for legislation, and 67 for amending a Senate rule. The term "nuclear option" is an analogy to nuclear weapons being the most extreme option in warfare.