DC
◆ The candidate record

David Costello

Born in Bangor, ME
Not yet graded
◆ The seat
OFFICE
Senate
STATE
Maine
PARTY
DEMOCRATIC PARTY
STATUS
Challenger
ELECTION
2026-11-03
◆ The record

Nothing on record yet. This candidate has no sourced actions: no floor votes, filings or scorecard ratings that we have verified, so there is no grade.

The record

No sourced action is on file for this candidate yet: no FEC-recorded 2A money, no recorded gun vote. That is not a statement about where they stand, only that nothing has been recorded.

Background

Education
  • Master of Science, Government/Political Sociology, London School of Economics and Political Science, 1985-1986
  • Bachelor of Arts, Political Science and History, George Washington University, 1981-1983
Profession
  • Interim Climate & Clean Energy Program Director, Natural Resources Council of Maine, 2020-2021
  • Climate Action Now! Coordinator, Energize Maryland, 2016-2019
  • Climate Action Consultant, University of Maryland's Center for Environmental Science (UMCES), 2015-2016
+5 more
  • Deputy Secretary/Acting Secretary, Maryland Department of the Environment, 2011-2015
  • Director of the Governor's Delivery Unit (GDU), State of Maryland Governor's Office, 2008-2011
  • Assistant Secretary/Director of Smart Growth, State of Maryland, 2007-2008
  • Director of Community Investment, City of Baltimore Mayor's Office, 2003-2007
  • Europe/Balkans Region Team Leader, United States Agency for International Development (USAID), 1997-2001
Political career
  • Candidate, United State House of Representatives, Maine, District 2, 2002
  • Candidate, United States Senate, Maine, 2024, 2026

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