Arizona’s highest court has signed off on voters’ crackdown on political secrecy, at least for now. On Monday, June 29, 2026, the Arizona Supreme Court issued a 4‑3 decision that keeps the voter‑approved Voters’ Right to Know Act in place, preserving the state’s anti‑“dark money” disclosure system while leaving the door open for future, narrower challenges arguing that forced donor disclosure could chill political speech.
Chief Justice Ann Timmer wrote the majority opinion, joined by Justices James Beene, William Montgomery and retired Justice Rebecca Berch, while Justices Kathryn King, John Lopez and Clint Bolick concurred in part and dissented in part, according to the Arizona Republic. The majority stressed that “the framers embedded election transparency into the constitution itself as a defining feature of Arizona’s new government,” and concluded that donations used to fund campaign media “are not private affairs protected from disclosure,” as reflected in the court’s opinion.
What the law requires
The Voters’ Right to Know Act, also known as Proposition 211, requires individuals or organizations that spend at least $50,000 on statewide campaign media to identify their original donors who gave more than $5,000, with lower spending and donation thresholds for local races. The measure also hands the Citizens Clean Elections Commission the power to write rules and enforce the new disclosure regime.
Those mechanics are spelled out in the state’s 2022 ballot materials, and supporters point out that the initiative passed with about 72% of the vote in November 2022, according to the Arizona Secretary of State’s publicity pamphlet and analysis from the Campaign Legal Center.
Who challenged it
The law immediately drew fire from conservative groups. The Center for Arizona Policy and the Arizona Free Enterprise Club filed suit in state court and were later joined by two anonymous donors, per reporting from the Arizona Mirror.
On a separate track, Americans for Prosperity and related organizations brought a federal lawsuit challenging the measure. Court filings and public materials in that case show the Ninth Circuit heard oral argument on May 15, 2025. The Americans for Prosperity Foundation has posted briefs and audio of the argument.
Legal implications
Although the Arizona Supreme Court upheld the statute on its face, the majority carved out room for future as‑applied challenges. Plaintiffs can still try to prove in specific situations that disclosure requirements are likely to lead to threats, harassment or reprisals and therefore unconstitutionally chill protected political expression.
Opponents’ attorney Andrew Gould noted that the opinion acknowledges plaintiffs may continue to press claims where compelled disclosure allegedly stifles speech, and state court records indicate the case remains active. Procedural details are available in the Arizona Judicial Branch docket for the matter.
For now, the ruling means Arizona’s disclosure rules stay in force as campaigns gear up for the 2026 cycle. The fight is not over, though: plaintiffs can pursue targeted as‑applied challenges in trial courts while the federal appeal continues in the Ninth Circuit. How aggressively the Citizens Clean Elections Commission enforces the law, and how courts handle those follow‑on cases, will help determine how much donor information ultimately sees the light of day.
