Written by attorneys · grounded in primary & secondary sources — see below
A doctrine permitting a litigant to challenge a law regulating speech on its face when the law prohibits a substantial amount of protected speech relative to its plainly legitimate sweep. The challenger bears the burden of demonstrating substantial overbreadth. A statute that is not substantially overbroad remains enforceable against unprotected conduct even if some applications might reach protected expression.
Sources & Authorities
How it applies
Common Examples
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Broad Leafleting Ban Near Bank
Felipe Figueroa sought to distribute pamphlets criticizing local banking practices on a public sidewalk. A city ordinance banned all leafleting within 500 feet of any financial institution. The ordinance reached far more protected expression than necessary to address congestion concerns. Figueroa prevailed on a facial challenge because the prohibition swept in a substantial volume of protected speech.
Campaign Finance Disclosure Rule
Francois Fortier wanted to publish anonymous editorials about election contributions. A federal statute required disclosure of all donors above a minimal threshold for any publication mentioning candidates. The rule captured extensive protected political speech beyond its core anti-corruption goals. Fortier succeeded in a facial attack because the overbreadth was substantial.
Select any source to read its text and confirm it supports the definition.
Cases
Study Supplements
Fatou Fall attempted to protest court policies on the steps of a county courthouse. A state law barred all gatherings near judicial buildings without permits issued only for official events. The statute reached peaceful protests and petitions far beyond any legitimate security needs. Fall obtained facial invalidation because the measure substantially burdened protected expression.
Parade Permit Ordinance
Frank Fisher organized a demonstration against municipal policies. A city rule required permits for any assembly of more than two people and gave officials unfettered discretion to deny them. The ordinance chilled numerous peaceful marches and rallies. Fisher prevailed on overbreadth grounds because the regulation suppressed a substantial amount of protected conduct.
Voter Registration Canvassing Ban
Felix Franco sought to register voters door to door in a rural county. A statute prohibited all unsolicited contact with potential voters outside designated polling places. The law reached extensive protected political activity beyond preventing fraud. Franco succeeded in a facial challenge because the prohibition was substantially overbroad.
Medical Procedure Information Limit
Freya Freeman prepared materials advising patients about reproductive options. A statute criminalized distribution of any information that could encourage certain procedures. The law reached wide-ranging protected speech on public health matters. Freeman obtained facial relief because the statute substantially exceeded its legitimate applications.
Common questions
Frequently Asked
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Who bears the burden in an overbreadth challenge?+
The challenger must show that the law prohibits a substantial amount of protected speech relative to its legitimate sweep.
Supporting sources
Does the overbreadth doctrine apply to commercial speech restrictions?+
No. Litigants challenging commercial speech rules must demonstrate that the law is unconstitutional as applied to their own speech rather than relying on facial overbreadth.
Supporting sources
Can a litigant whose own speech is unprotected still raise an overbreadth claim?+
Yes. Standing exists to challenge a law as substantially overbroad on its face even if the litigant’s own expression might not be protected, to prevent chilling of others’ speech.
Supporting sources
What happens if a statute is not substantially overbroad?+
The statute remains enforceable against unprotected conduct even if some hypothetical applications would affect protected speech.
Supporting sources
410 U.S. 113 (1973)Constitutional Law
…District Court in the present case, have held state laws unconstitutional, at least in part, because of vagueness or because of overbreadth and abridgment of rights. Abele v. Markle , 342 F. Supp. 800 (Conn. 1972), appeal docketed, No. 72-56; Abele v. Markle , 351 F. Supp. 224 (Conn. 1972), appeal docketed, No. 72-730;…