California Primary 2026 Mail Calendar & Deadlines

Key dates, mail-in ballot windows and drop deadlines for the June 2026 California primary, with campaign mail planning tips.

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Why Universal Mailworks

• Family-owned, 15+ years in business (60+ years combined team experience)
• 220M+ pieces printed and mailed, 99.9% on-time delivery
• 10,000 jobs produced per year for 1000+ clients
• One accountable team for design, printing, postage and USPS drop-off
• Union printing available

Service Areas

We serve businesses across Southern California, including Los Angeles County, Orange County, Riverside County, San Bernardino County, San Diego County, Ventura County, Imperial County, Kern County, and Monterey County.

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