Incumbent Democrat Raul Ruiz faces three Republican challengers—Joe Males, Ronald Huffman, and Ceci Andrade Truman—in California's nonpartisan top-two primary for the 25th Congressional District on June 2, 2026. The district, rated solidly Democratic, features a June primary that advances the top two vote-getters to the November general election regardless of party. Campaigns have centered on cost of living, healthcare access, immigration, and economic policy. Key procedural milestones include ballot mailing that began in early May, a May 18 voter registration deadline, and early in-person voting that opened May 23. No major candidate withdrawals or late developments have altered the field since filing closed in March.