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GMMB

Washington, D.C., United States · Founded 1983

51-200 employees

Sourced & current · updated Oct 26, 2026

GMMB is a Washington, D.C.-based full-service political and social issue advertising agency known for crafting high-impact campaigns for Democratic candidates, causes, and nonprofits.

Where they sit

Marketing AgencyPerformance Marketing

One of the top Democratic political advertising and communications agencies in the United States, with decades of presidential and major campaign experience.

Ownership

Parent: Finsbury Glover Hering

Competitors

Key people

Pre-call brief from ATDb — sourced from the live database, current as of Oct 26, 2026. Not a static screenshot.