Majority Voting, Speaker’s Casting Vote, House Validity, and 10% Quorum
Official heading: “Voting in Houses, power of Houses to act notwithstanding vacancies and quorum”
- Source edition
- The Constitution of India (as on 1 May 2026)
- Source locator
- Part V, Article 100, printed page 44
- Last human source-link check
- Not yet checked
- Last human legal review
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1. In One Sentence
Article 100 provides that parliamentary decisions are determined by majority vote with the presiding officer having a tie-breaking casting vote, validates proceedings despite vacancies, and sets quorum at one-tenth.
2. What It Means in Everyday Language
Article 100 governs the essential mechanics of parliamentary decision-making and legislative validity. Under clause (1), all questions before either House (or a joint sitting) are decided by a majority of votes of the members present and voting, except where the Constitution explicitly specifies a special majority.
Clause (1) also establishes the neutrality of the Chair: the Speaker or presiding officer does not vote in the first instance, but possesses and must exercise a casting vote in the event of an equality of votes (a tie).
Clause (2) protects legislative validity: either House may conduct business notwithstanding any vacancies in its membership, and proceedings remain completely valid even if it is later discovered that an unauthorized person sat or voted. Clauses (3) and (4) fix the quorum at one-tenth of the total membership of the House, imposing a constitutional duty on the presiding officer to adjourn or suspend the sitting if quorum is lacking.
3. Practical Illustrative Example
During a late-night legislative sitting, a division vote on an amendment results in a dead heat of 200 votes in favor and 200 votes against.
4. Important Limits, Qualifications & Exceptions
Article 100 governs parliamentary voting, neutrality of the Chair, quorum, and institutional validity.
- Simple majority rule for ordinary legislative questions.
- Casting vote doctrine: Presiding officer votes only to resolve an equality of votes.
- Institutional continuity: Business valid despite vacancies or unauthorized participation.
- Quorum standard: One-tenth of total membership required to constitute a meeting.
- Duty to adjourn: Presiding officer must suspend proceedings when quorum is absent.
5. Operative Constitutional Text
6. Sources & Historical Assembly Deliberations
Assembly quotations are withheld until wording, dates, and attribution have been checked against the primary record.
- •Government of India (Legislative Department, Ministry of Law and Justice) • Part V, Article 100, printed page 44 • Human source-link check pending
Primary PDF accessed and transcribed with AI assistance on 14 October 2026. Formatting and amendment annotation markers are omitted; operative wording is retained. This is not human legal review. Later amendments and commencement notifications have not been comprehensively checked.