Arizona Court Rejects GOP Lawsuit Targeting Mail Voting

In a major victory for voting rights, the Arizona Court of Appeals has rejected a lawsuit brought by right-wing groups and the Arizona Republican Party that sought to limit how election officials verify mail-in ballot signatures.

The case was filed by anti-voting groups, including the Arizona Free Enterprise Club, Restoring Integrity and Trust in Elections (a legal group launched by Trump allies including Bill Barr) and the Arizona GOP. They argued that Arizona’s 2019 and 2023 Election Procedures Manuals (EPMs) illegally allowed county officials to compare a voter’s ballot signature with multiple known signatures on file — such as prior ballot envelopes or poll books — rather than restricting verification to the original voter registration form.

Had the plaintiffs prevailed, election officials would have been forced to reject more ballots for “signature mismatches,” a change that could have disenfranchised elderly and voters with disabilities, whose signatures evolve over time.

The judges held that the plaintiffs lacked standing — meaning they failed to show any concrete injury from the state’s signature-verification process. Their complaint, the court said, amounted to a generalized partisan disagreement rather than a real harm.

“The Republican party has failed to identify ‘an existing state of facts’ demonstrating any direct effect the provision has had or will have on it. It has therefore failed to demonstrate a real interest necessary to have standing to seek declaratory relief,” the court wrote. “At least on this record, the Republican party’s argument amounts to little more than a hypothetical interest in the dispute, which we lack the ability to evaluate.”

With nearly 90% of Arizonans voting by mail, the ruling preserves a flexible signature verification system that prevents wrongful ballot rejections, while also making clear that courts won’t indulge partisan lawsuits based on generalized grievances, thereby protecting both voter access and the stability of election administration.

This ruling comes amid a wave of litigation nationwide and calls by President Donald Trump aimed at narrowing access to mail voting and questioning established election procedures.