Full Breakdown
Spike in Mail-In Ballot Rejections Highlights California’s Voting System Strain
7/24/2026, 2:15:59 PM
Core Event: Surge in Rejected Mail Ballots in June Primary
In the June 2026 primary, 148,241 mail-in ballots were rejected, or 1.73 % of all mail ballots. That exceeds the 108,982 rejections in 2024 and the 105,818 in 2022, marking the highest volume in recent statewide primaries.
Background & Context
California’s voting system provides every registered voter with a ballot that may be returned up to seven days after Election Day if the envelope is postmarked by Election Day. The state promotes this to boost participation and ensure every vote can be counted.
Data & Statistics
- Late-arrival rejections: 93,479 ballots (?63 % of rejections) were discarded because the postmark dated after Election Day, the primary driver of the spike.
- Signature issues: About 44,000 ballots were set aside for signature mismatches, and more than 8,300 lacked a signature on the return envelope.
- Duplicate or missing ballots: 743 ballots were voided for duplicate voting; other rejections involved missing or multiple ballots in a single envelope.
- County variation: Tulare County had the highest rejection rate at 3.52 %, followed by Alpine and Merced Counties at 3.36 % each.
All figures come from the California secretary of state’s office.
Official Statements & Responses
Kim Alexander, president of the nonpartisan California Voter Foundation, warned that the surge “deserves scrutiny,” especially given the influx of voters who waited until the final days of a chaotic governor’s race.
In January, a bipartisan group of U.S. senators sent a letter to the USPS expressing alarm that recent mail-processing consolidations could affect postmark dates for election-year ballots.
President Donald Trump cited the rejection numbers in criticism of California’s election system, and the Justice Department opened an investigation into Los Angeles County elections. First Assistant U.S. Attorney Bill Essayli challenged Governor Gavin Newsom’s dismissal of fraud claims, writing “Prove it” on X.
Criticism & Opposition
Senators Tammy Baldwin (D-WI) and Governor Tony Evers (D-WI) called on the USPS to address delays that have caused hundreds of ballots to arrive after Election Day in Wisconsin, underscoring concerns that similar postal delays may be influencing California’s rejection rates.
Verbatim Quotes
- “Ballots rejected due to lateness are caused primarily to being postmarked too late to count, not because they arrived too late to count,” — Kim Alexander
Conflicting Reports & Gaps
The released data do not break down rejected ballots by party affiliation, leaving analysts unable to assess whether the spike disproportionately affected any particular voter group.
Why It Matters
California’s mail-in system is a national model for expanding voter access. The unprecedented level of ballot rejections raises questions about the reliability of postmark-based eligibility rules and the impact of USPS processing changes on election integrity. While officials say there is no evidence of widespread fraud, the high rejection rates and political scrutiny could prompt legislative or procedural reforms aimed at reducing future ballot invalidations.
