The vote required to adopt a main motion under Robert’s Rules of Order is a majority vote, meaning more than half of the votes cast by members entitled to vote.1Robert’s Rules of Order. FAQs That standard covers nearly all ordinary business, from approving minutes to authorizing a purchase. A smaller category of motions — those that restrict members’ rights or override the regular rules — requires a two-thirds vote instead, and an organization’s own bylaws can set a different threshold for any particular decision.
What a Majority Actually Means
A majority is simply more than half of the votes cast. If 30 members vote, 16 affirmative votes carry the motion. If 17 vote, 9 is enough.
The official Robert’s Rules of Order site specifically warns against defining a majority as “50 percent plus one.” That formula breaks down with odd numbers. When 17 votes are cast, 50 percent is 8.5, and adding one gives 9.5, which could lead someone to the wrong conclusion that 9 affirmative votes aren’t sufficient — even though 9 out of 17 is plainly more than half.1Robert’s Rules of Order. FAQs
Majority is also not the same thing as plurality. A plurality just means the most votes among several options, even if the leader falls short of half. If three candidates receive 40, 35, and 25 votes, the one with 40 has a plurality but not a majority. A main motion needs a true majority to pass.
What Counts in the Vote Total
Only votes actually cast go into the calculation. Blank ballots and abstentions are excluded. In a room of 50 members where only 30 cast a vote, the majority is measured against those 30, not 50.
That makes abstentions mathematically neutral under the default rule. If 10 members vote yes, 8 vote no, and 5 abstain, the total cast is 18, the majority is 10, and the motion passes. The abstentions have no effect on the outcome.
One caveat worth checking in your own documents: if your bylaws require a “majority of members present” rather than a “majority of votes cast,” abstentions do affect the result because they count toward the denominator. The two standards look similar and behave very differently.
What Happens on a Tie
A tie vote defeats a main motion. Adoption requires more than half of the votes cast, so an even split does not clear the bar. Ten in favor and ten against is not a majority in favor, and the motion fails.
Whether the presiding officer can change that outcome depends on the size of the assembly. In small boards of roughly a dozen members or fewer, the chair votes on every question like anyone else. In larger assemblies, the chair normally refrains from voting to preserve impartiality, with two exceptions: when the vote is by ballot, or when the chair’s single vote would change the result.1Robert’s Rules of Order. FAQs
So the chair of a large assembly can vote in the affirmative to break a tie and pass the motion, or vote in the negative when the yes side leads by exactly one, creating a tie and defeating it. The same power applies to two-thirds vote questions. If the chair declines to vote when the room is tied, the motion simply fails.
When a Two-Thirds Vote Is Required
Some motions carry heavier consequences, and parliamentary procedure demands a higher threshold for those. A two-thirds vote means at least twice as many affirmative votes as negative votes among those cast. If 90 members vote, at least 60 must vote yes.1Robert’s Rules of Order. FAQs
The motions that require two-thirds share a common feature: they restrict member rights or override normal procedures. The main categories include:
- Closing or limiting debate (often called “calling the question”), which cuts off discussion before every member has had a chance to speak.
- Suspending or modifying the rules of order for the meeting.
- Closing nominations or closing the polls.
- Removing a member or an officer.
- Preventing consideration of a question, which blocks a motion from even being discussed.
The reasoning is that a bare majority should not be able to silence the minority, strip a member’s rights, or upend the organization’s structure on a razor-thin vote.
How Previous Notice Lowers the Threshold
For certain motions, giving advance written notice can drop the required vote from two-thirds down to a majority. The most common example is a motion to amend something previously adopted — changing a policy the group approved at an earlier meeting. Without notice, that motion needs two-thirds. With proper notice given at the previous meeting or included in the call of the current meeting, a majority is enough.
Rescinding a prior action works the same way. It can be done by a two-thirds vote without notice, a majority vote with notice, or a vote of a majority of the entire membership. Advance notice gives absent members a fair chance to show up and weigh in, which justifies the lower threshold.
Many organizations miss this. A board member who wants to reverse an earlier decision has a much easier path by thinking ahead and sending written notice before the meeting where the issue will come up.
Unanimous Consent for Routine Items
Not every main motion needs a formal counted vote. For routine or noncontroversial matters, the chair can ask for unanimous consent, also called general consent. The chair says something like, “If there is no objection, the minutes are approved as read,” and pauses. If no one objects, the motion is adopted without a show of hands.
A single objection ends unanimous consent and forces a regular vote. That is not a veto; the objecting member simply wants the question put to a formal vote, which is their right. Unanimous consent saves time on business nobody is likely to oppose, and it should not be used to push through anything contested.
Quorum Comes First
No main motion can be validly adopted without a quorum present. A quorum is the minimum number of members who must be in attendance for the assembly to conduct business. When the bylaws are silent, the Robert’s Rules default is a majority of the entire membership. Many organizations set a lower number in their bylaws because assembling a true majority of all members at every meeting is impractical for larger groups.
Without a quorum, substantive business is invalid. If it later comes out, with clear and convincing proof, that a quorum was not actually present when a vote was taken, the action can be overturned even years later.1Robert’s Rules of Order. FAQs
When a meeting loses its quorum, the assembly’s options shrink. Members can keep debating informally, but they cannot vote. Permissible actions are generally limited to adjourning, recessing, or taking steps to produce a quorum, such as calling absent members. Once a quorum is established at the start of a meeting, it is presumed to continue unless someone raises a point of order noting that members have left.1Robert’s Rules of Order. FAQs
When Your Bylaws or State Law Change the Answer
Everything above describes the default rules under Robert’s Rules of Order Newly Revised. Those defaults apply only when the organization’s own governing documents are silent. The order of authority runs from the top down:
- Applicable federal and state law overrides everything below it. A state nonprofit corporation act, for instance, can impose voting requirements the organization cannot reduce.
- The corporate charter or articles of incorporation come next.
- Bylaws come after that. If the bylaws say an action requires a three-fourths vote, that controls over the Robert’s Rules default.
- Special rules of order and the chosen parliamentary authority fill in the gaps the higher documents leave open.
- Standing rules and long-standing custom sit at the bottom.
When these conflict, the higher authority wins. If state law requires a majority of the entire board to approve a contract, it does not matter that Robert’s Rules would accept a majority of the votes cast. Before you assume a simple majority is all you need to pass your motion, read your bylaws and check any statute that applies to your organization. The default is only a starting point.