A California sheriff seized ballots. The court ruling shutting the probe will resonate nationwide

The California Supreme Court has definitively halted a controversial investigation by Riverside County Sheriff Chad Bianco, ruling on September 24, 2026, that his seizure of over 650,000 ballots from the November 2025 special election was unlawful. Sheriff Bianco had taken custody of the ballots earlier in the year, claiming he was probing allegations of voter fraud related to Proposition 50. The unanimous decision mandates that Bianco immediately return all seized election materials to county officials and cease his probe, asserting that state law dictates ballots must remain with election administrators.

The court's ruling emphasized that the sheriff lacked the authority for such an action and that his seizure created a "substantial risk to election integrity" by allowing unregulated handling of sensitive election documents. This decision also upheld the authority of California Attorney General Rob Bonta, who had previously directed Bianco to stop the investigation. Bonta, along with voting rights advocates, had argued that Bianco defied clear legal mandates and acted outside the scope of his powers.

This legal outcome is expected to have significant national implications, particularly for other election integrity probes across the country. Legal experts suggest the clarity of this California ruling will serve as an important precedent, potentially making judges in other jurisdictions more hesitant to issue warrants for the seizure of election materials. The case has been closely watched as concerns about law enforcement interference in elections have grown, with Bianco's actions having been linked to broader election fraud conspiracy narratives.