The constitutional text

Article I · Section 5

Select any highlighted phrase to understand what it means.

Each House shall be the Judge of the Elections, Returns and Qualifications of its own Members, and a Majority of each shall constitute a Quorum to do Business; but a smaller Number may adjourn from day to day, and may be authorized to compel the Attendance of absent Members, in such Manner, and under such Penalties as each House may provide.

Each House may determine the Rules of its Proceedings, punish its Members for disorderly Behaviour, and, with the Concurrence of two thirds, expel a Member. Each House shall keep a Journal of its Proceedings, and from time to time publish the same, excepting such Parts as may in their Judgment require Secrecy; and the Yeas and Nays of the Members of either House on any question shall, at the Desire of one fifth of those Present, be entered on the Journal.

Neither House, during the Session of Congress, shall, without the Consent of the other, adjourn for more than three days, nor to any other Place than that in which the two Houses shall be sitting.

Source: National Constitution Center edition. Original wording is preserved; commentary explains historical and superseded provisions.

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Article I, Section 5, Clause 1 — quorum

A majority is needed to conduct business

Current text
and a Majority of each shall constitute a Quorum to do Business;

What it means

A majority of each chamber constitutes its quorum for doing business. A quorum is a participation requirement, distinct from the number of votes needed to approve a particular proposition.

Historical setting

The Confederation required specified numbers of states for congressional action. The Constitution instead organizes ordinary chamber participation around its members, while retaining special voting thresholds for particular decisions.

What it does

A proposal may require a majority or a supermajority vote after a quorum exists. Confusing attendance with voting thresholds can make it appear that a minority possesses authority the Constitution does not provide.

Debate & interpretation

The rule promotes representative participation but can give strategic absence political value. The following provisions address the practical problem of keeping the institution functioning when too few members attend.

A common misreading

A quorum does not mean every measure requires the affirmative vote of a majority of all authorized seats; the applicable decision rule must be identified separately.

Think it through

Why have both an attendance threshold and a voting threshold instead of only one rule for action?

Follow the connection

Sources & further reading

Original Madison Center commentary. Explanations distinguish the text, historical context, and interpretive disagreements.

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