Two-Thirds Majority on Important Questions

The two-thirds majority on important questions is the supermajority voting rule established by Article 18(2) of the Charter of the United Nations, signed at San Francisco on 26 June 1945. Article 18 sets out the General Assembly's voting architecture in three paragraphs: paragraph 1 grants each member one vote; paragraph 2 enumerates the categories of "important questions" requiring a two-thirds majority of members present and voting; and paragraph 3 provides that "other questions" — including the determination of additional categories to be treated as important — are decided by simple majority. The drafters at Dumbarton Oaks and San Francisco crafted this dual threshold as a compromise between sovereign equality and the recognition that certain plenary decisions carry sufficient institutional weight to demand broader consensus than a bare majority can supply.

Procedurally, the rule operates through a sequence codified in the Rules of Procedure of the General Assembly, particularly Rules 83 through 87. The President of the Assembly first identifies whether the matter falls within the enumerated Article 18(2) categories. If a delegation contests the classification, the threshold question — whether the matter is "important" — is itself decided by simple majority under Article 18(3), a procedural device that has produced considerable strategic maneuvering. Once classified as important, the vote proceeds by recorded ballot, show of hands, or roll-call. The denominator is members "present and voting," which Rule 86 defines as those casting an affirmative or negative vote; abstentions, absences, and formal non-participation are excluded from the calculation. A delegation seeking to lower the effective threshold may therefore abstain rather than vote against.

The enumerated categories under Article 18(2) are: recommendations with respect to the maintenance of international peace and security; election of the non-permanent members of the Security Council; election of members of the Economic and Social Council; election of members of the Trusteeship Council under Article 86(1)(c); admission of new Members to the United Nations; suspension of the rights and privileges of membership; expulsion of Members; questions relating to the operation of the trusteeship system; and budgetary questions. Beyond these textual categories, the Assembly has invoked Article 18(3) to designate additional matters as important — most consequentially in the China representation question, where Resolution 1668 (XVI) of 15 December 1961 required any change in China's representation to be treated as an important question, a procedural barricade that endured until Resolution 2758 (XXVI) of 25 October 1971 seated the People's Republic.

Contemporary practice illustrates the rule's continuing salience. The admission of South Sudan on 14 July 2011, following Security Council recommendation, required a two-thirds threshold in the Assembly under Article 4 read with Article 18(2). The election of five non-permanent Security Council members each June at UN Headquarters in New York routinely produces multi-ballot contests when no candidate achieves the two-thirds threshold on the first round — as occurred in the 2016 Latin American and Caribbean Group contest between Venezuela and Guatemala, and again in the 2020 Western European and Others Group race. Budget resolutions emerging from the Fifth Committee, including the biennial and now annual programme budgets adopted in late December, formally fall under the two-thirds requirement, though the Committee on Contributions and the Fifth Committee work by consensus to avoid contested votes.

The two-thirds majority on important questions should be distinguished from the consensus procedure that governs much modern Assembly business, under which no formal vote is taken and any delegation may break consensus by calling for a recorded vote. It also differs from the Security Council's voting rule under Article 27, which requires nine affirmative votes including the concurring votes of the permanent members — the so-called veto. It is likewise distinct from the qualified-majority requirements under Article 108 (Charter amendments require two-thirds of all Members, not merely those present and voting, plus ratification by two-thirds including all permanent Council members) and Article 109 (General Conference for Charter review).

Edge cases generate recurring disputes. The "present and voting" formula means that a coordinated abstention campaign can lower the effective bar; this tactic featured in debates over the 2012 upgrade of Palestine to non-member observer State status via Resolution 67/19, adopted 138–9–41 on 29 November 2012, where the high abstention count reduced the operative denominator. Whether a particular peace-and-security recommendation falls within Article 18(2) has been contested when the Council is deadlocked and the Assembly acts under the Uniting for Peace framework (Resolution 377 A (V) of 3 November 1950). Scholars including Bruno Simma and the editors of the Oxford Charter Commentary have noted that the boundary between "important" budgetary questions and routine administrative matters has eroded as the Fifth Committee channels almost all financial business through consensus.

For the working practitioner — a desk officer drafting voting instructions, a mission's legal adviser preparing a resolution, or a journalist covering the General Debate — mastery of Article 18 is foundational. Vote-counting in New York is rarely about marshalling a simple majority; it is about assembling two-thirds of those who will actually cast ballots, which means cultivating abstentions as carefully as affirmative votes. Knowing whether a draft will be classified as important, whether opponents will force an Article 18(3) preliminary vote, and how regional groups will instruct their members determines the difference between adoption and procedural defeat in the Assembly Hall.