Maricopa is the state's largest county and 25 percent of vote tabulation machines were not working on November 8, causing widespread voter disenfranchisement. According to the county, 70 voting locations were impacted. 

"The Elections Integrity Unit ('Unit') of the Arizona Attorney General's Office ('AGO') has received hundreds of complaints since Election Day pertaining to issues related to the administration of the 2022 General Election in Maricopa County. These complaints go beyond pure speculation, but include first-hand witness accounts that raise concerns regarding Maricopa's lawful compliance with Arizona election law. Furthermore, statements made by both Chairman Gates and Recorder Richer, along with information Maricopa County released through official modes of communication appear to confirm potential statutory violations of title 16," Brnovich wrote in a letter to Maricopa County Civil Division Chief Thomas Liddy over the weekend. 

"According to Maricopa County, at least 60 voting locations had issues related to some ballot-on-demand (BOD) printers having printer configuration settings that were non-uniform, which appeared to have resulted in ballots that were unable to be read by on-site ballot tabulators," he continued. "Based on sworn complaints submitted by election workers employed by Maricopa County, the BOD printers were tested on Monday, November 7 without any apparent problems. Many of those election workers report that despite the successful testing the night before, the tabulators began experiencing problems reading ballots printed by the BOD printers within the first thirty minutes of voting on Tuesday, November 8, 2022."