Cite as: 558 U. S. ____ (2010) 7 Syllabus acknowledged that as-applied challenges would be available if a group could show a “ ‘reasonable probability’ ” that disclosing its con tributors’ names would “ ‘subject them to threats, harassment, or re prisals from either Government officials or private parties.’ ” Id., at 198. Pp. 50–52. (b) The disclaimer and disclosure requirements are valid as ap plied to Citizens United’s ads. They fall within BCRA’s “electioneer ing communication” definition: They referred to then-Senator Clinton by name shortly before a primary and contained pejorative references to her candidacy. Section 311 disclaimers provide information to the electorate, McConnell, supra, at 196, and “insure that the voters are fully informed” about who is speaking, Buckley, supra, at 76. At the very least, they avoid confusion by making clear that the ads are not funded by a candidate or political party. Citizens United’s arguments that §311 is underinclusive because it requires disclaimers for broad cast advertisements but not for print or Internet advertising and that §311 decreases the quantity and effectiveness of the group’s speech were rejected in McConnell. This Court also rejects their contention that §201’s disclosure requirements must be confined to speech that is the functional equivalent of express advocacy under WRTL’s test for restrictions on independent expenditures, 551 U. S., at 469–476 (opinion of ROBERTS, C.J.). Disclosure is the less-restrictive alterna tive to more comprehensive speech regulations. Such requirements have been upheld in Buckley and McConnell. Citizens United’s ar gument that no informational interest justifies applying §201 to its ads is similar to the argument this Court rejected with regard to dis claimers. Citizens United finally claims that disclosure requirements can chill donations by exposing donors to retaliation, but offers no evidence that its members face the type of threats, harassment, or reprisals that might make §201 unconstitutional as applied. Pp. 52– 55. (c) For these same reasons, this Court affirms the application of the §§201 and 311 disclaimer and disclosure requirements to Hillary. Pp. 55–56. Reversed in part, affirmed in part, and remanded. KENNEDY, J., delivered the opinion of the Court, in which ROBERTS, C. J., and SCALIA and ALITO, JJ., joined, in which THOMAS, J., joined as to all but Part IV, and in which STEVENS, GINSBURG, BREYER, and SOTOMAYOR, JJ., joined as to Part IV. ROBERTS, C. J., filed a concurring opinion, in which ALITO, J., joined. SCALIA, J., filed a concurring opin ion, in which ALITO, J., joined, and in which THOMAS, J., joined in part. STEVENS, J., filed an opinion concurring in part and dissenting in part, in which GINSBURG, BREYER, and SOTOMAYOR, JJ., joined. THOMAS, J., filed an opinion concurring in part and dissenting in part.

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