California primary vote-counting delays fuel fraud accusations

California’s June 2026 primary election experienced prolonged vote‑counting due to its extensive mail‑ballot system and outdated voter‑registration procedures. Late‑arriving mail ballots shifted early leads in the governor and Los Angeles mayor races, prompting former President Donald Trump to allege the results were rigged and to call for federal oversight.

U.S. Attorney Bill Essayli opened federal investigations days after the polls closed, citing alleged ballot‑harvesting schemes and a Riverside County seizure of more than 650,000 ballots that was later halted by a court. State Attorney General Rob Bonta dismissed the fraud claims as unfounded, noting past recounts found no widespread irregularities.

A California election watchdog report described the state's vote‑counting process as the slowest in the nation, attributing delays to a “bottom‑up” registration system, signature‑verification bottlenecks and inter‑county data dependencies. The report recommended modernizing equipment, electronic signature curing and public awareness campaigns, while warning of potential federal actions that could restrict mail‑ballot delivery. Governor Gavin Newsom subsequently signed legislation limiting law‑enforcement seizure of ballots without judicial approval.