Slate Mailers & Voter Guide Placements for Martinez campaigns means CA Slates placements that reach high-propensity voters with a third-party endorsement frame — sized to the Contra Costa County voter universe rather than a national template. Martinez has roughly 38,000 residents and 24,000 registered voters, which puts most local races inside a small-universe playbook where slate mailers & voter guide placements is decisive. As the Contra Costa County seat, Martinez has an outsized civic awareness for its size. The city's refinery heritage and waterfront location create campaigns focused on economic transition, environmental stewardship, and preserving the historic downtown. Our slate mailers & voter guide placements program supports Martinez candidates running for Martinez City Council (5 members) and Martinez Unified School District, plus county and ballot-measure efforts in Contra Costa County.
Last reviewed: 2026-07-02