National Republican Senatorial Committee v. Federal Election Comm’n · ¶74

That record in the States weakens any claim that federal political-party coordinated-expenditure limits are a proportionate, necessary, and narrowly tailored means for addressing circumvention. In a case involving attempted restrictions on speech, the absence of evidence matters. See Cruz, 596 U. S., at 307. Speculation does not suffice to justify suppression of political speech: The Court has “never accepted mere conjecture as adequate to carry a First Amendment burden.” McCutcheon, 572 U. S., at 210 (quotation marks omitted).

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