In what may be the most dramatic election integrity confrontation in California history, Riverside County Sheriff Chad Bianco seized more than 650,000 ballots cast in the November 2025 special election—and the political establishment has been scrambling to stop him ever since.The dispute began when a citizen-led group called the Riverside County Election Integrity Team approached the sheriff's office with a troubling allegation: a discrepancy of nearly 46,000 ballots between what was recorded as cast and what was actually counted. According to the group's analysis, the final vote count exceeded the handwritten records of ballots received by approximately 45,896 votes—a margin far too large to dismiss as mere clerical error.Sheriff Bianco, a Republican running for governor in a crowded June primary, didn't brush the complaint aside. He launched what he called a "fact-finding mission" to physically count the ballots and compare the result with the total votes reported to the state. "This investigation is simple," Bianco said at a March 20 press conference. "Physically count the ballots and compare that result with the total votes reported."On February 9, Bianco's office obtained a court-approved warrant from Riverside County Judge Jay Kiel—a judge Bianco had endorsed in 2022—authorizing the seizure of election materials. Over the following weeks, his deputies took possession of roughly 1,000 boxes of ballots and election materials, eventually totaling more than 650,000 cast ballots. When Attorney General Rob Bonta ordered him to halt the probe, Bianco doubled down, seizing another 426 boxes of ballots.The response from Sacramento was swift and fierce. Attorney General Rob Bonta filed legal challenges in both the superior court and the California Supreme Court, arguing that Bianco had no authority over election materials and had failed to establish probable cause for a criminal investigation. "The Sheriff has not identified any particular crime that may have been committed by anyone—a necessary predicate to obtain a criminal search warrant," Bonta's office stated. Secretary of State Shirley Weber also condemned the seizure, noting that "sheriff's deputies are not elections officials, and they do not have expertise in election administration."The UCLA Voting Rights Project joined the legal battle, filing a petition on behalf of several Riverside County voters arguing that state law clearly dictates that "voted ballots are to remain in the custody of election officials." Sonni Waknin, an attorney with the group, said: "Nothing the sheriff has presented changes that basic rule."