The United Nations Secretary‑General is selected through a multi‑stage process in which the 15‑member Security Council essentially picks the single candidate, and then the entire UN membership, acting through the General Assembly, formally appoints them to the role. While the job is filled by consensus rather than popular election, the selection has become somewhat more transparent in recent years, with public nomination lists, campaign‑style hearings and a carefully choreographed ballet of straw votes, vetoes and, ultimately, the endorsement of the world’s 193 member states.
The legal basis: two short sentences
The entire process rests on a brief clause buried in the 1945 UN Charter.
Article 97 states: “The Secretary‑General shall be appointed by the General Assembly upon the recommendation of the Security Council.”
In other words, the Security Council has the gate‑keeping power (who can be considered), while the General Assembly has the formal appointment power (who actually gets the job).
Early General Assembly resolutions, such as A/RES/11(I) in 1946, added that nominations and elections should be held in private meetings with secret ballots, a practice that sets the tone for today’s largely closed‑door negotiations.
Step 1: Opening the selection
The modern process is now governed by a sequence laid out in recent General Assembly and Security Council documents, notably the 2025 resolution 79/327 on the “revitalization” of the Assembly’s work.
That resolution, and a 2025 joint letter from the President of the General Assembly and the President of the Security Council, formally launch the race for the next Secretary‑General when the current holder’s term is nearing its end. The letter invites all member states to submit nominations and explains the schedule and standards expected of candidates.
The window for openness has been pushed earlier: the joint letters now call for the Security Council to begin its selection by the end of July of the year before the term starts, with a vote scheduled to recommend a candidate in time for the General Assembly to appoint a new leader at the start of the next calendar term.
Under the current convention, the Secretary‑General serves a five‑year term, renewable once, a rule that has held consistently since 1965, with only one deviation (Dag Hammarskjöld was re‑elected for a second term that began in 1958 but was cut short by his death in 1961).
Step 2: Nominations and the candidate list
Once the race is opened, member states or groups of states nominate individuals by sending letters to both the President of the General Assembly and the President of the Security Council. Unlike the 1946–2015 era, when candidatures were often shrouded in secrecy, today these letters are compiled into a public list of candidates maintained on a dedicated UN website.
For each candidate, the UN now publishes:
- A vision statement spelling out their priorities.
- A curriculum vitae detailing diplomatic and managerial experience.
- Campaign‑financing disclosures, which show contributions from member states, institutions, or private donors.
This layer of transparency is a relatively recent innovation, introduced in the 2010s and reinforced in the 2025 charter‑review process, with the aim of countering accusations of “gentlemen’s agreement” politics among the permanent five (P5).
Examples in the current cycle (for the 2027–2031 term) include former heads of state, senior UN officials and diplomats from countries such as Argentina, Chile, Senegal, and the United States, each running on a distinct platform of reform, peace‑building and climate or development policy.
Step 3: The Security Council’s vetting game
Behind the public list, the real winnowing happens in the Security Council, which must arrive at one name its members can support without a veto.
To qualify, a candidate:
Needs at least nine of 15 Security Council votes in favor, and
Must not be vetoed by any of the five permanent members (China, France, Russia, the UK, and the US).
Because the Charter does not spell out how the Council should choose among candidates, the body uses a straw‑poll system, adopted in the 1980s and still in place today. In several rounds, members cast secret ballots, indicating whether they:
- “Encourage”,
- “Discourage”, or
- Have “no opinion” about each candidate.
The P5’s votes are distinguished by red paper ballots; the 10 rotating members’ votes use white paper. Any “discourage” from a permanent member is widely interpreted as a likely veto, which effectively kills or stalls that candidate’s chances.
The straw‑poll routine continues until:
- One candidate has no vetoes and
- Holds the highest number of “encourage” votes.
At that point, the Council adopts a formal resolution recommending that candidate to the General Assembly. Since 1996, such recommendations have typically been adopted by acclamation, meaning the vote is not a close roll‑call, so the Secretary‑General is put forward as if there is unity among the P5 and the wider Council.
Step 4: The General Assembly “yes” vote
The Security Council does not “elect” the Secretary‑General on its own; it only recommends. The final appointment is the prerogative of the General Assembly.
The Assembly then holds a session in which it votes to appoint the candidate. In practice, this has almost always been a formality, with the 193 members ratifying the Council’s pick rather than rejecting it.
Historically, the Assembly has voted by acclamation, show of hands or applause, so the Secretary‑General is appointed without a recorded division, although resolutions and rules permit a roll‑call vote if someone insists. No recommended candidate has ever been formally rejected by the Assembly, though the possibility of a no vote exerts subtle pressure on the Council to find a broad‑based nominee.
Once the appointment is confirmed, the Secretary‑General‑designate prepares for the swearing‑in ceremony, traditionally held on January 1 of the new term, at which point they become the chief administrative officer of the United Nations, overseeing the Secretariat, and representing the organization in peace, development, and human‑rights disputes worldwide.
Informal powers, regional rotation, and politics
In addition to the formal steps, several informal norms shape the race.
- Veto power of the P5 – The US, UK, France, Russia and China, as permanent members, can kill any candidate with a single “no,” which often leads to intense back‑channel diplomacy and horse‑trading on regional representation, reform agenda and diplomatic style.
- Regional rotation expectations – Member states have long pushed for an informal “geographic rotation,” arguing that the office should pass among the major regions (Africa, Asia‑Pacific, Eastern Europe, Latin America‑Caribbean, Western Europe, and Others).
- Non‑binding gender‑equity pressure – Since the 1990s, women’s groups and some governments have pressed for the first female Secretary‑General, producing several high‑profile candidacies, though none have yet succeeded.
Taken together, the process reflects a global balancing act: every country can nominate and vote, but the job is effectively reserved for individuals who can secure the secret‑ballot support of 9 Council members and the acquiescence of the five great powers.
Why the process matters now
As the United Nations prepares for a new Secretary‑General to take office in January 2027, the scrutiny of the selection machinery is especially high. With crises from climate change and pandemics to war in Ukraine, the Middle East and Africa, the General Assembly and Security Council are under pressure to choose a leader who can mobilize action where the P5 are divided, and the system is perceived as gridlocked.
The added transparency, public candidate lists, open dialogues, vision statements and funding disclosures, has not changed the underlying power structure, but it has made the UN’s “unique international election” somewhat more legible to the global public. What remains essentially unchanged is the constitutional reality: the world’s top diplomat is not chosen by a planetary ballot, but by the quiet, high‑stakes, vetoblanked mechanics of the Security Council and the affirming vote of the General Assembly behind closed doors.