Thomas A. "Tad" Devine (born June 11, 1955) is an American political consultant. Devine was a senior adviser in Al Gore's 2000 and John Kerry's 2004 Presidential campaigns. He was also the chief strategist for Bernie Sanders' 2016 presidential campaign. He has worked on campaigns for president and Prime Minister in Europe, Latin America, and the Middle East, as well as several U.S. Senate races. Devine is the president of Washington D.C.-based media consulting firm Devine Mulvey Longabaugh.