How Moderated and Unmoderated Caucuses Work in Model United Nations Committees

A delegate raises a placard. The chair calls her name. She has sixty seconds to argue that the committee should focus on refugee resettlement, not border security, because her assigned country takes a humanitarian stance. That is a moderated caucus. Twenty minutes later, the same delegate is standing by the window with four others, crossing out clauses on a working paper someone printed from a laptop. That is an unmoderated caucus. The distinction between a moderated and unmoderated caucus is the single most important procedural choice a delegate makes. It determines whether the room listens to prepared arguments or lets coalitions form through direct negotiation.

Structure And Procedure

In a moderated caucus, the chair maintains control of who speaks, for how long, and on what sub-topic. A delegate moves for a moderated caucus by stating the total duration, the individual speaking time, and the specific topic. Example: “Motion for a moderated caucus of ten minutes with a speaking time of forty-five seconds on the topic of international funding mechanisms for climate adaptation.” The motion passes by simple majority. The chair then recognises speakers from raised placards in turn. Each speaker addresses the room on that sub-topic only. When time expires, the committee returns to the speakers list and the general agenda.

Speaking time runs from thirty seconds to two minutes, set by the initial motion. Harvard-style procedure, used at HMUN, Yale MUN, and Georgetown NAIMUN, allows the delegate who finishes speaking to yield remaining time: to questions, to another delegate, or to the chair. A yield to the chair ends the speech immediately. The chair may also rule a motion dilatory and refuse to entertain it. This is rare but happens when the proposed topic is irrelevant to the debate.

Getting Recognised In A Large Room

The failure case: a delegate who cannot get recognised by the chair during a moderated caucus loses the ability to influence the direction of discussion. At large committees, above sixty delegates, the chair may recognise only six or seven speakers in a ten-minute caucus. A placard raised late means silence for that entire segment. Preparation matters. The first three speakers in a moderated caucus set the framing for the sub-topic. Delegates who prepare a forty-five-second opening statement before the motion have a structural advantage over those who think on their feet.

Suspending Formal Debate

An unmoderated caucus suspends formal debate. Delegates leave their seats, move around the room, and negotiate directly. The motion is simpler: “Motion for an unmoderated caucus of fifteen minutes.” It passes by simple majority. There is no speaking time, no sub-topic, and no chair recognition. Delegates form blocs, draft resolution clauses, negotiate amendment language, and build coalitions. The chair’s role is limited to keeping time and ensuring delegates remain in the room. The quorum rule is not suspended.

Durations vary by conference. Under Harvard-style rules, delegates move for five to twenty minutes. Under THIMUN procedure, there is no separate motion for an unmoderated caucus; the chair sets lobbying periods of fifteen to thirty minutes per session, and those periods are the primary mechanism for resolution building. At NMUN, the chair sets unmoderated caucus duration at five to fifteen minutes, per the NMUN Delegate Preparation Guide (2024 edition).

Avoiding Bloc Isolation

The failure case is bloc isolation. A delegate who stands alone during an unmoderated caucus, who has not joined a bloc, who does not know which room to be in, will not appear on any resolution’s sponsor list and will have no influence on the final text. Unmoderated caucuses reward interpersonal negotiation over prepared speaking. A delegate who can walk up to four strangers and propose a clause within two minutes will outperform a delegate with a perfect opening speech but no coalition skills.

Feature	Moderated Caucus	Unmoderated Caucus
Who controls the floor	Chair recognises speakers individually	No chair control; delegates negotiate freely
Speaking time	Set by motion; 30 seconds to 2 minutes per speaker	None; informal conversation
Topic	Specified in the motion; distinct from general agenda	No specified topic; any subject related to the committee
Duration	Set by motion, typically 5 to 20 minutes	Set by motion, typically 3 to 20 minutes (Harvard); 15 to 30 minutes (THIMUN lobbying)
Voting threshold	Simple majority	Simple majority
Order of precedence	Takes precedence over unmoderated caucus	Less disruptive; voted after moderated if simultaneous
Primary skill required	Prepared public speaking	Interpersonal negotiation and coalition building
Resolution output	Speeches, no text produced	Working papers, resolution drafts, amendment negotiation
Crisis committee adaptation	May include directive introduction	Directive drafting; back-room consultation allowed

The Core Calculation

The strategic calculation is straightforward: use a moderated caucus when you need to test the room’s position on a sub-topic or when you have a prepared argument that moves the debate your way. Use an unmoderated caucus when you need to draft text, build a bloc, or negotiate amendments. The best delegates sequence both in a single committee session.

A Worked Example

Your delegation represents Japan in a DISEC committee on small arms trafficking. You suspect the room is split between delegates who want strict arms export controls and those who favour voluntary national measures. You move for a moderated caucus of eight minutes with a speaking time of forty-five seconds on “the effectiveness of mandatory versus voluntary arms control frameworks.” The first three speakers argue for mandatory controls; the next two argue for voluntary measures. You now know exactly where the blocs are. You immediately move for an unmoderated caucus of fifteen minutes, walk to the three delegates who favoured mandatory controls, and propose a working paper that mirrors your prepared clauses. By the end of the caucus, you have a bloc of six delegates and a draft resolution. The delegates who stayed in their seats have no clauses on the paper and will spend the rest of committee trying to join a bloc that no longer needs them.

When To Move

Move for an unmoderated caucus after a moderated caucus reveals which delegates share your position. Move after the speakers list runs dry and debate becomes repetitive. Move when you have a completed working paper and need signatures. Do not move for an unmoderated caucus during the first hour of committee. You have not yet identified potential bloc partners, and the room is still settling into its social structure. The exception is THIMUN procedure, where lobbying begins from the first session and moderated caucuses are not used.

For The Prepared Speaker

Moderated caucuses favour the prepared speaker. A delegate who arrives with a ninety-second statement on each likely sub-topic can use every moderated caucus to dominate the room’s framing. The chair recognises delegates who raise placards quickly and speak concisely. Prepare three short statements per agenda item, each with a clear policy position and a concrete proposal. Deliver them in the first two moderated caucuses of the session.

For The Interpersonal Negotiator

Unmoderated caucuses favour the interpersonal negotiator. A delegate who can read a room, identify which delegates are writing the resolution, and insert themselves into the drafting process will control the final text regardless of speaking ability. During the first unmoderated caucus, identify the three largest blocs forming and join the one whose position aligns with your policy. Do not try to start your own bloc unless you already have two other delegates committed to it. Standing alone in an unmoderated caucus is a visible failure that damages your credibility for the rest of the committee.

The delegate who cannot speak well but negotiates well should push for frequent, short unmoderated caucuses, five to seven minutes each, to maintain momentum without losing the room. The delegate who speaks well but negotiates poorly should push for longer moderated caucuses with shorter speaking times, so they get multiple opportunities to speak in a single session.

Gathering Co-Sponsors

Use an unmoderated caucus when you have a working paper that needs co-sponsors. A draft resolution with no sponsors is not a resolution. It is a piece of paper. An unmoderated caucus of ten minutes is enough to collect five signatures if you have a clear clause list and a persuasive explanation of your position.

Negotiating Amendments

Use an unmoderated caucus when you need to negotiate an amendment. In Harvard-style procedure, amendments are debated and voted on individually. The amendment’s author needs to know before the vote how many delegates will support it. That intelligence comes from direct conversation during unmoderated caucus, not from the speakers list.

Breaking A Deadlock

Use an unmoderated caucus when the debate is stuck. A committee that has been on the speakers list for forty minutes with the same three delegates repeating the same positions needs a reset. An unmoderated caucus breaks the pattern, lets new delegates speak informally, and produces a new direction for the moderated caucus that follows.

Do not use an unmoderated caucus when you are the dominant speaker and the moderated caucus is going your way. Every minute of unmoderated caucus is a minute your opponents can use to build a rival bloc. If you are winning on the floor, keep the floor.

Who This Guide Is For

The moderated versus unmoderated caucus distinction suits the first-time delegate who needs to understand that committee is not a lecture hall. You must choose between speaking to the room and negotiating in a huddle. It suits the experienced delegate moving from school to university circuit who must adapt from THIMUN lobbying periods to Harvard-style moderated caucuses, where the ability to deliver a forty-five-second statement on demand determines floor time. It suits the faculty advisor who needs to train delegates in both skills. A team that can only negotiate but cannot speak will fail at HMUN. A team that can only speak but cannot negotiate will fail at THIMUN.

It does not suit the parent evaluating whether MUN is worth the cost. That parent needs a page on what the activity actually teaches versus what it claims to teach, not a tactical guide to caucus motions. It does not suit the researcher studying the actual United Nations. Caucuses as defined here do not exist in UN procedure, which uses informal consultations with no formal motion structure.

The One Thing That Goes Wrong

The single thing that most often goes wrong: a delegate who has a perfect opening speech and no negotiation strategy wins the first moderated caucus and loses the committee, because during unmoderated caucus they stood alone while their opponents drafted the resolution without them. Preparation for one caucus type without the other is preparation for failure.