In Model UN, the primary sponsor (sometimes called the "main sponsor" or simply "sponsor") is the delegate or delegation that authored a draft resolution or amendment and takes lead responsibility for shepherding it through committee. Primary sponsors typically wrote the bulk of the operative clauses, recruit additional sponsors and signatories to meet submission thresholds, and serve as the main point of contact for the dais during merging, friendly amendments, and voting procedure.
Most conferences distinguish three roles on a draft:
- Primary sponsor(s) – the principal author(s) who fully endorse the document and committed to its content.
- Co-sponsors – delegates who also support the draft and are listed on the header; they generally cannot vote against it on substance without first removing their name (rules vary by conference).
- Signatories – delegates who merely wish to see the draft debated and take no position on its content.
Submission requirements differ by circuit. Many North American collegiate conferences (e.g., NMUN, HNMUN) require a minimum number of sponsors plus signatories — often around 20% of the committee — before a draft can be introduced. THIMUN-style conferences instead use a "main submitter" plus a set number of co-submitters and may require a procedural vote to bring the resolution to the floor.
Primary sponsors usually deliver the introductory speech when the draft is presented, manage caucus negotiations to absorb competing blocs, and decide whether to accept friendly amendments. If a primary sponsor withdraws sponsorship, the draft may collapse unless a co-sponsor assumes the lead role, depending on the rules of procedure in force.
Strategically, being a primary sponsor signals leadership to chairs and is often weighted heavily in awards rubrics — but it also carries reputational risk if the draft fails on the floor or is poorly written. Experienced delegates balance authorship visibility against the diplomatic cost of being publicly tied to controversial language.
Example
At NMUN New York 2023, the delegation of Kenya served as a primary sponsor of a draft resolution on sustainable urbanization in the UN-Habitat Assembly, recruiting more than a dozen co-sponsors before introduction.