PHOENIX — Arizona’s secretary of state office must release a list of tens of thousands of voters who were mistakenly classified as having access to the full ballot because of a coding glitch, a Maricopa County Superior Court judge ruled Thursday.

Secretary of State Adrian Fontes’ office initially denied a public records requests for the list that was filed by America First Legal, a group run by Stephen Miller, a onetime adviser to former President Donald Trump. Fontes’ office cited concerns over the accuracy of the list and the safety of the voters included.

Judge Scott Blaney said the court received no credible evidence showing the information would be misused or encourage violence or harassment against the voters whose citizenship hasn’t been verified. Blaney set a deadline of noon Monday for Fontes’ office to release a list of 98,000 voters and information Fontes relied on when announcing in early October that even more voters had been impacted — for a total of 218,000.

Arizona is among the most closely watched states given its presidential battleground status, and both campaigns have ramped up their presence in recent weeks to court undecided voters. The coding glitch doesn’t impact federal races. But it led to a decision from the state Supreme Court in September that the misclassified voters — representing about 5% of all undecided voters — still could vote the full ballot even though officials haven’t confirmed whether they are U.S. citizens.

That number of voters could tip the scales in tight local and state races, as well as fiercely competitive ballot measures on abortion and immigration. The voters are nearly evenly registered as Democrats, Republicans or with neither of those parties.

Fontes has said he has the list of 98,000 voters but not a more expansive one despite declaring many more were affected. His office said Thursday that it’s reviewing Blaney’s decision and weighing its options.

Blaney restricted Strong Communities Foundation and its legal counsel, America First Legal, from distributing information they receive from Fontes’ office ahead of Election Day on Tuesday to anyone but county recorders, the Arizona Senate president and speaker of the Arizona House and members of the elections committee.

America First Legal’s counsel, James Rogers, said in a statement Thursday that the group is hopeful the records could be used to verify the citizenship of voters on the list.

“It is unfortunate that Secretary Fontes so aggressively opposed our common-sense efforts to help restore trust in our state’s election system,” Rogers said.

The ruling also requires Fontes’ office to release communications and data transmissions with a number of government agencies, including the Arizona Department of Transportation and Gov. Katie Hobbs’ office.

The misclassification of voters from federal-only to full-ballot voters was blamed on a glitch in state databases involving drivers’ licenses and the Arizona Motor Vehicle Division.

Arizona is unique among states in that it requires voters to prove their citizenship to participate in local and state races. Those who haven’t but have sworn to it under the penalty of law are allowed to participate only in federal elections.

The state considers drivers’ licenses issued after October 1996 to be valid proof of citizenship. However, the system coding error marked 218,000 voters who obtained licenses before 1996, mistakenly, as full-ballot voters, state officials said.