GMMB

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

GMMB is a leading full-service communications and advertising agency headquartered in Washington, D.C., with a strong focus on political campaigns, public health initiatives, and social issue advocacy. Founded in 1983, the firm has built a reputation as one of the most influential Democratic-aligned political consultancies in the United States, having worked on multiple presidential campaigns including those of Barack Obama and Hillary Clinton. The agency combines strategic communications, media buying, creative production, and digital advertising to deliver integrated campaign solutions. The agency operates across a broad range of verticals including political advertising, public affairs, nonprofit communications, and government health campaigns. GMMB has served clients such as the Bill & Melinda Gates Foundation, the CDC, and numerous Senate and gubernatorial campaigns. Their work spans traditional broadcast media, digital advertising, and social media, making them a hybrid agency that bridges traditional political consulting with modern AdTech capabilities. While GMMB is not a pure AdTech company in the programmatic or SaaS sense, it occupies a significant position in the political and advocacy advertising ecosystem. The firm's deep expertise in persuasion, audience targeting, and media strategy gives it a competitive edge in high-stakes campaigns where message precision and media efficiency are critical. GMMB is a founding partner of the global communications network Finsbury Glover Hering (FGH), which broadens its international reach and capabilities.