Article 100 of the Constitution of India lays down the basic rules governing voting in Parliament. It also establishes that a House may continue to function despite vacancies in its membership and prescribes the constitutional quorum required for a meeting of either House.
- Meaning of Article 100
- Clause-wise Explanation
- Presiding Officer’s Voting Position
- What is a Casting Vote?
- Important Exception to the General Voting Rule
- Article 96 and the Special Position of the Speaker
- Clause (2): Power to Act Despite Vacancies
- Validity of Proceedings Despite an Ineligible Participant
- Vacancy vs Quorum
- Clause (3): Quorum
- Quorum and Voting Majority Are Different
- Clause (4): What Happens if There Is No Quorum?
- Adjournment vs Suspension of the Meeting
- Article 100 and Different Types of Majority
- Article 100 and Joint Sitting
- Relationship with Article 108
- Relationship with Article 101
- Relationship with Article 102
- Relationship with Article 103
- Relationship with Article 96
- Important Distinctions
- Common Confusions
- Article at a Glance
- Quick Revision
- Conclusion
The Article therefore deals with three connected aspects of parliamentary functioning: voting, validity of proceedings despite vacancies, and quorum.
Meaning of Article 100
Article 100 provides the general constitutional rule for deciding questions before either House of Parliament or a joint sitting of both Houses.
Unless the Constitution provides otherwise, questions are decided by a majority of the members present and voting. The presiding officer ordinarily does not vote in the first instance but has a casting vote in the event of an equality of votes.
The Article further provides that vacancies in the membership of a House do not prevent it from functioning. It also prescribes one-tenth of the total membership of the House as the quorum, unless Parliament provides otherwise by law.
Clause-wise Explanation
Clause (1): Voting in the Houses
Article 100(1) establishes the ordinary voting rule for Parliament.
It provides that, subject to other provisions of the Constitution, all questions at:
- any sitting of either House of Parliament; or
- a joint sitting of both Houses,
shall be determined by a majority of votes of the members present and voting.
There are therefore three important elements:
- the rule applies to either House and to joint sittings;
- the relevant majority is calculated among members present and voting; and
- the rule applies unless the Constitution itself provides otherwise.
What does “members present and voting” mean?
The expression “members present and voting” is significant.
The majority is not calculated with reference to the total membership of the House. It is calculated on the basis of members who are both:
- present; and
- actually voting.
Members who are present but abstain from voting are not counted as voting for or against the question.
For example, if 300 members are present but only 240 vote on a question, the ordinary majority is determined on the basis of those 240 votes.
If 121 members vote in favour and 119 against, the question is decided in favour of the proposal.
This is different from constitutional provisions that require a specified majority of the total membership or another special majority.
Presiding Officer’s Voting Position
Article 100(1) creates a special rule for the presiding officer.
The Chairman or Speaker, or the person acting as Chairman or Speaker, does not vote in the first instance.
However, if the votes are equally divided, the presiding officer has and exercises a casting vote.
Ordinary rule
The ordinary position can therefore be represented as:
No vote in the first instance → casting vote in case of equality
This rule applies to the Chairman of the Rajya Sabha and the Speaker of the Lok Sabha, as well as a person acting as Chairman or Speaker.
What is a Casting Vote?
A casting vote is the additional vote exercised by the presiding officer when the votes on a question are equally divided.
For example:
- Votes in favour: 100
- Votes against: 100
There is an equality of votes. The presiding officer may then exercise the casting vote to determine the question.
The casting vote exists to prevent a deadlock in the House.
Important Exception to the General Voting Rule
The words “Save as otherwise provided in this Constitution” are important.
Article 100 establishes the general rule, but it does not override specific constitutional provisions prescribing a different voting requirement.
For example, Article 368 prescribes a special majority for constitutional amendments.
Similarly, Article 61 provides a specific majority requirement for the impeachment of the President.
Therefore, Article 100’s ordinary majority rule applies only where the Constitution does not prescribe a different rule.
Article 96 and the Special Position of the Speaker
Article 96 provides a specific exception concerning proceedings for the removal of the Speaker.
While a resolution for the Speaker’s removal is under consideration, the Speaker:
- may speak;
- may otherwise take part in the proceedings;
- may vote in the first instance; but
- cannot vote in the event of an equality of votes.
Article 96 expressly operates notwithstanding Article 100.
This creates an important distinction:
| Situation | Speaker’s voting position |
|---|---|
| Ordinary proceedings | No first vote; casting vote in case of equality |
| Speaker’s removal proceedings under Article 96 | May vote in the first instance |
| Equality of votes in Speaker’s removal proceedings | No casting vote |
This is a specific constitutional exception to the general rule under Article 100.
Clause (2): Power to Act Despite Vacancies
Article 100(2) provides that either House of Parliament has the power to act notwithstanding any vacancy in its membership.
A vacancy therefore does not automatically prevent the House from conducting its business.
For example, if some Lok Sabha seats are vacant because members have resigned, died, or otherwise ceased to hold their seats, the remaining members can continue to transact parliamentary business, subject to the applicable constitutional requirements including quorum.
The existence of vacancies by itself does not invalidate the proceedings of the House.
Validity of Proceedings Despite an Ineligible Participant
Article 100(2) contains an additional safeguard.
It provides that parliamentary proceedings remain valid even if it is subsequently discovered that a person who was not entitled to do so:
- sat;
- voted; or
- otherwise took part in the proceedings.
The discovery of such an irregularity after the proceedings does not, by itself, invalidate the proceedings.
This provision protects the continuity and validity of parliamentary proceedings from being retrospectively challenged merely because an unauthorised person participated.
Vacancy vs Quorum
Vacancy and quorum are different constitutional concepts.
Vacancy
A vacancy means that a seat in the membership of the House is unoccupied.
Article 100(2) provides that the House can act despite such vacancies.
Quorum
Quorum refers to the minimum number of members who must be present for the House to constitute a valid meeting.
Article 100(3) prescribes the constitutional quorum.
Therefore:
Vacancies do not automatically prevent the House from functioning.
But:
The House must still satisfy the quorum requirement during a meeting.
This distinction is important.
Clause (3): Quorum
Article 100(3) provides that, until Parliament by law otherwise provides, the quorum to constitute a meeting of either House shall be one-tenth of the total number of members of the House.
Thus, the constitutional default quorum is:
1/10 of the total membership of the House
The provision applies separately to the Lok Sabha and Rajya Sabha.
What is quorum?
Quorum is the minimum number of members who must be present for the House to constitute a meeting.
It is concerned with the presence of members, not with the number of members voting on a particular question.
This is why quorum should not be confused with the majority required to pass a motion or bill.
Quorum and Voting Majority Are Different
The two concepts operate at different stages.
| Concept | Meaning |
|---|---|
| Quorum | Minimum number of members required to constitute a meeting |
| Majority of members present and voting | Voting rule for deciding an ordinary question |
For example, a House may have sufficient members present to satisfy quorum, but only a smaller number may actually vote on a particular question.
The voting majority is then calculated from those present and voting, subject to the Constitution’s specific requirements.
Clause (4): What Happens if There Is No Quorum?
Article 100(4) deals with a situation in which, at any time during a meeting of a House, there is no quorum.
In such a situation, it is the duty of the:
- Chairman;
- Speaker; or
- person acting as Chairman or Speaker,
to either:
- adjourn the House, or
- suspend the meeting
until there is a quorum.
The presiding officer therefore has a constitutional duty to ensure that proceedings do not continue when the required quorum is absent.
Adjournment vs Suspension of the Meeting
Article 100(4) gives the presiding officer two options:
Adjourn the House
The sitting may be formally adjourned.
Suspend the meeting
The meeting may be suspended until the required quorum is restored.
The constitutional objective in either case is the same: parliamentary proceedings should not continue without the required quorum.
Article 100 and Different Types of Majority
One of the most important aspects of Article 100 is that its ordinary rule concerns a majority of members present and voting.
It should not be confused with other constitutional majorities.
| Type of majority | Basic idea |
|---|---|
| Majority of members present and voting | More than half of those present and actually voting |
| Majority of total membership | More than half of the total membership of the House |
| Special majority | A constitutionally prescribed higher threshold, often involving total membership and a specified proportion of members present and voting |
| Other special majority | Some constitutional provisions prescribe their own particular voting formula |
Article 100 provides the ordinary rule unless another constitutional provision requires something different.
Article 100 and Joint Sitting
Article 100(1) expressly applies its ordinary voting rule to a joint sitting of the Houses.
A joint sitting is a sitting of both Houses together under Article 108.
Unless the Constitution provides otherwise, questions at such a sitting are determined by a majority of the members present and voting.
The presiding arrangements for a joint sitting are separately governed by Article 108.
Relationship with Article 108
Article 108 provides for joint sittings of both Houses in specified circumstances.
Article 100(1) supplies the general voting principle applicable to a joint sitting: questions are ordinarily determined by a majority of members present and voting, subject to constitutional exceptions.
Thus:
Article 108 → circumstances and procedure for joint sitting
Article 100 → general voting rule applicable to the joint sitting
Relationship with Article 101
Article 101 deals with vacation of seats in Parliament.
When seats become vacant, Article 100(2) becomes relevant because the House retains the power to act notwithstanding vacancies.
However, vacancies may affect the numerical calculation of the total membership for purposes where the Constitution expressly uses a particular membership-based formula.
The existence of a vacancy and the quorum requirement should therefore be analysed separately.
Relationship with Article 102
Article 102 deals with disqualifications for membership of Parliament.
Article 100(2) specifically provides that proceedings remain valid even if it is subsequently discovered that someone who was not entitled to sit, vote or otherwise participate had done so.
Thus, Article 100(2) protects the validity of proceedings despite the later discovery of such an irregularity.
Relationship with Article 103
Article 103 provides for determination of questions regarding disqualification of members under Article 102.
Article 100(2) is relevant to the validity of proceedings where a person is subsequently found not to have been entitled to participate.
The two provisions therefore address different questions: Article 103 concerns the determination of disqualification, while Article 100(2) addresses the validity of parliamentary proceedings despite certain participation by an unauthorised person.
Relationship with Article 96
Article 96 is particularly important when studying Article 100.
Article 100 contains the general rule that the presiding officer does not vote in the first instance but has a casting vote in case of equality.
Article 96 creates a specific exception for proceedings concerning the removal of the Speaker.
Therefore, Article 96 must be applied where its specific circumstances exist.
Important Distinctions
“Present” vs “present and voting”
These expressions are not interchangeable.
A member may be physically present in the House but choose not to vote. Such a member is not included among the members “present and voting” for determining the ordinary voting majority.
Quorum vs majority
Quorum concerns the minimum number of members required to constitute a meeting.
Majority concerns the number of votes required to decide a question.
A House can satisfy quorum even though only some of the members present participate in a particular vote.
Vacancy vs absence
A vacancy means that a seat is unoccupied.
Absence means that a member who holds a seat is not present at the sitting.
Article 100(2) specifically addresses vacancies, while Article 100(3) and (4) concern the number of members present for the purpose of quorum.
Ordinary majority vs special majority
Article 100 establishes the ordinary majority rule, but the Constitution contains several provisions prescribing special voting requirements.
The applicable constitutional provision must therefore always be checked before applying the ordinary rule.
Casting vote vs first vote
Under the ordinary rule, the presiding officer does not vote in the first instance.
The presiding officer’s vote is available only when there is an equality of votes.
This is different from the special rule under Article 96 concerning proceedings for the Speaker’s removal.
Common Confusions
Is every question in Parliament decided by a simple majority?
Not necessarily.
Article 100 establishes the ordinary rule of a majority of members present and voting, but it expressly begins with the qualification “Save as otherwise provided in this Constitution”.
Where another constitutional provision prescribes a different majority, that specific provision applies.
Does the Speaker vote in every Lok Sabha vote?
No.
Under the ordinary rule in Article 100, the Speaker does not vote in the first instance. The Speaker exercises a casting vote only when there is an equality of votes.
Does the Rajya Sabha Chairman vote normally?
No.
Under Article 100, the Chairman does not vote in the first instance but has a casting vote in case of equality.
Can Parliament function if some seats are vacant?
Yes.
Article 100(2) expressly states that either House may act notwithstanding vacancies in its membership.
However, the House must still satisfy the applicable quorum requirement for its meetings.
What is the quorum of a House of Parliament?
Until Parliament provides otherwise by law, the quorum is one-tenth of the total number of members of the House.
What happens if there is no quorum during a sitting?
The Chairman, Speaker or person acting as such must either adjourn the House or suspend the meeting until there is a quorum.
Are members who are present but abstain counted as “present and voting”?
No.
The ordinary voting majority is calculated among members who actually vote.
Can a later discovery that an unauthorised person participated invalidate the entire proceeding?
Article 100(2) provides that parliamentary proceedings remain valid notwithstanding the subsequent discovery that a person who was not entitled to do so sat, voted or otherwise took part in the proceedings.
Article at a Glance
| Point | Position |
|---|---|
| Article | Article 100 |
| Subject | Voting, vacancies and quorum |
| Ordinary voting rule | Majority of members present and voting |
| Applies to | Either House and joint sittings |
| Presiding officer | Does not vote in the first instance |
| Casting vote | Available in case of equality of votes |
| Vacancies | House may act despite vacancies |
| Effect of later discovery of unauthorised participation | Proceedings remain valid |
| Constitutional quorum | One-tenth of total membership |
| No quorum during sitting | House must be adjourned or meeting suspended |
| Major exception | Constitution may prescribe a different voting requirement |
| Important related Articles | Articles 96, 101, 102, 103 and 108 |
Quick Revision
- Article 100 deals with voting in Parliament, vacancies and quorum.
- Ordinary questions are decided by a majority of members present and voting.
- The rule applies to either House and joint sittings, unless the Constitution provides otherwise.
- The Speaker or Chairman does not vote in the first instance.
- In case of an equality of votes, the presiding officer exercises a casting vote.
- A House can function despite vacancies in its membership.
- Proceedings remain valid even if it is subsequently discovered that an unauthorised person sat, voted or otherwise participated.
- The constitutional default quorum is one-tenth of the total number of members of the House.
- If there is no quorum during a sitting, the presiding officer must adjourn the House or suspend the meeting until quorum is restored.
- “Present and voting” is different from merely being present.
- Quorum is different from the majority required to pass a question.
- Article 100 is the general voting provision; specific constitutional provisions may prescribe different majorities.
- Article 96 creates a special voting rule for proceedings concerning the removal of the Speaker.
- Article 108 deals with joint sittings, while Article 100 provides the general voting rule applicable to them.
Conclusion
Article 100 provides the basic procedural framework for decision-making in Parliament. It establishes the ordinary rule of majority voting, gives the presiding officer a casting vote in the event of a tie, allows the Houses to function despite vacancies, and ensures that parliamentary meetings have the required quorum. At the same time, its opening words recognise that specific constitutional provisions may prescribe different voting requirements. The Article therefore serves as the general constitutional foundation for voting and the orderly conduct of parliamentary proceedings.
