ARIZONA

Federal Grand Jury Subpoena Sought Arizona Senate’s 2020 Election Review Records

Mar 23 · March 23, 2026 · 2 min read

Why It Matters

A grand jury subpoena issued by the U.S. Attorney’s Office for the District of Arizona requested nearly all materials related to the Arizona Senate’s 2020 election review, indicating an active federal criminal investigation into activities surrounding the partisan examination of Maricopa County ballots. The records request encompasses digital ballot images, chain-of-custody documentation, and communications between state lawmakers and county officials.

What Happened

The U.S. Attorney’s Office for the District of Arizona delivered a grand jury subpoena to Arizona Senate President Warren Petersen on March 5, requesting comprehensive records from the legislative chamber’s 2020 election review. The FBI’s Phoenix Field Office Fraud Investigations unit transmitted the request via email. The subpoena explicitly identifies the materials as necessary for a criminal investigation.

The request arrived approximately two weeks after former Department of Homeland Security Secretary Kristi Noem visited Arizona to promote Republican voting legislation. The Arizona Senate subsequently provided terabytes of data to federal investigators, including digital images of ballots from the review conducted at the Veterans Memorial Coliseum.

By the Numbers

The Arizona Senate transferred terabytes of digital data to federal authorities in response to the subpoena. The materials included ballot images from Maricopa County’s 2020 general election. The review examined ballots at the Veterans Memorial Coliseum beginning in May 2021. The subpoena covered five distinct categories of records and electronic media.

What Records Were Requested

Federal investigators sought reports produced by Cyber Ninjas, the Florida-based firm contracted to conduct the review. The subpoena requested all original electronic storage devices provided by Maricopa County to the Arizona Senate, including external hard drives, thumb drives, USB drives, memory cards, and optical discs, along with chain-of-custody documentation.

The request also covered electronic media provided to Cyber Ninjas or its subcontractors, including copies of Maricopa County Election Department software and data systems. Investigators requested documentation of forensic tools, software versions, procedures, and all materials related to imaging, copying, extracting, and analyzing county election systems.

The subpoena demanded official records showing communications between the Arizona Senate and Maricopa County public officials, including members of the Board of Supervisors, the Recorder’s Office, and the Elections Department.

Zoom Out

The federal investigation follows a pattern of scrutiny into post-2020 election activities in multiple states. The Arizona Senate’s review, conducted by contractors with no election administration experience, ultimately reported no evidence of widespread vote irregularities. Similar reviews in other states have faced legal challenges and questions about security protocols and chain-of-custody procedures for sensitive election materials.

What’s Next

The criminal investigation by the U.S. Attorney’s Office for the District of Arizona remains active. Federal authorities are expected to review the terabytes of data provided by the Arizona Senate. The scope and targets of the investigation have not been publicly disclosed.

Last updated: Jun 10, 2026 at 6:28 AM GMT+0000 · Sources available
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