Plain-English summary
Court will decide whether Arizona can require documentary proof of U.S. citizenship to register to vote
The Republican National Committee asked the Court to review whether Arizona may require registrants to provide “satisfactory evidence of citizenship” to register for federal elections. The case challenges how states can enforce the constitutional requirement that only U.S. citizens vote in federal elections and tests whether Arizona’s procedure and use of outside information are lawful. The Court has agreed to hear the case (granted June 29, 2026).
Why this matters
The decision will affect how states verify citizenship for voter registration in federal elections. It could change whether states can require documentary proof beyond the federal form, how they may use information from third parties (like voter-integrity groups or government databases) to challenge registrations, and how easy or hard it is for eligible citizens to register and vote.
Who may feel it
- State election officials (nationwide)
- Voter-registration applicants, especially naturalized citizens and those with incomplete documentation
- Political parties and advocacy groups involved in registration drives
- Organizations that submit information about voters (e.g., watchdog groups, third-party challengers)