DC
DAVID COSTELLO
Candidate for U.S. Senate
DEM
CHALLENGER
Biography
David Costello, a 65-year-old Democrat from Brunswick, Maine, is running for U.S. Senate in 2026. He has a background in political campaigns, serving as an aide to the Maine Secretary of State, working with USAID, and holding senior roles in Maryland state government, including Deputy/Acting Secretary of the Department of Environment. Costello also directed non-governmental climate projects and holds degrees from George Washington University and the London School of Economics.
Top Priorities
- Enact reforms to address challenges to democracy, the environment, and the economy.
- Ensure Mainers have access to education, job skills, housing, and healthcare.
- Advocate for Medicare for All, providing comprehensive coverage including long-term care, vision, dental, and hearing.
Campaign Finance
Total Raised
$111,308