Supreme Court to Review Arizona Citizenship Voting Laws

The Supreme Court of the United States agreed on June 29, 2026, to review two contested Arizona laws regarding voter registration and roll maintenance. The court will determine whether the state can legally require documented proof of citizenship for those registering for presidential elections and whether Arizona can conduct mass purges of non-citizens from voter databases within 90 days of an election.

These 2022 laws are currently the subject of a legal conflict. The U.S. Court of Appeals for the 9th Circuit previously allowed voters who use federal registration forms without citizenship proof to vote in federal elections, though not in state elections. The Republican National Committee appealed this decision, arguing that the National Voter Registration Act of 1993 does not prohibit Arizona from requiring such proof for federal contests.

Nonprofit organizations Mi Familia Vota and Voto Latino initiated the legal challenges, contending that the requirements are a baseless assault on the election system and could disenfranchise eligible citizens. Republican advocates support the laws as a means to ensure voter rolls remain clean. Arizona Secretary of State Adrian Fontes stated that the state needs clarity from the court on administering these requirements.

The court is expected to hear the case during the term beginning in October 2026, with a final decision likely by June 2027. While the rulings will not impact the upcoming November election, they could affect more than 43,000 registered voters in Arizona in future cycles.