Doug Duncan

In 2018, Duncan endorsed now Congressman David Trone.

In 2014, Duncan made his political comeback seeking to reclaim his old post at Montgomery County, Maryland Executive for a fourth term. Running on a platform of "Leadership In Action" with ideas of revitalizing downtown Wheaton, better attract and keep jobs and business with an improved procurement process and more "open for business" attitude, create express lanes on I-270, build a technology institute venture similar to that of Cornell and New York City, and provide gigabit internet speeds across the county. He lost in the Democratic primary on June 24 to incumbent Ike Leggett.

Shortly after his campaign, Duncan was selected as president and CEO of Leadership Greater Washington, a non-profit organization with a mission to bring leaders together to make positive community impact in the Washington Metropolitan region. The vision for LGW is to help the Washington Metropolitan become a more dynamic and collaborative community with engaged leaders of diverse backgrounds, geographies, and sectors through dynamic, education and membership programs that promote dialogue and cooperation, enabling area leaders to find effective solutions to regional challenges. He still serves in this role today. In this new role, Duncan was named to Washington Business Journal's Power 100 for 2014 and 2015.

In 2014, Duncan was named to newly-elected Maryland Governor Larry Hogan's transition team as well as newly-elected District of Columbia Mayor Muriel Bowser's.

In 2012, Duncan endorsed then upstart and underdog John Delaney in his first bid for Congress; "Duncan’s endorsement was the first of any consequence, and he backed up his support by cutting radio spots for Delaney and going door to door with him".

After Maryland, Duncan was self-employed as a consultant advising various enterprises in Greater Washington D.C. Metro Region and beyond regarding economic development, technology and immigration issues. In 2010, Duncan was speculated as being in consideration for General Manager of WMATA, after John Catoe vacated the post, including receiving an endorsement from then Congressman, and now United States Senator Chris Van Hollen.

In an April, 2009 Baltimore Sun article, Duncan proclaimed, "I'm living proof that treatment works."

On March 22, 2007, Duncan was appointed Vice President of Administrative Affairs at the University of Maryland, College Park, effective April 4. This made him the University's chief administrative and finance officer with authority over the University's human resources, comptroller, public safety, facilities and environmental management, and procurement. During his tenure, Duncan led the East Campus redevelopment project, designed as a mixed-use town center with graduate student housing along the Route 1 corridor. In association with the project, he also worked to improve relations between the university and the surrounding city of College Park. On October 15, 2008, after a seventeen-month tenure, Duncan announced his resignation from the University of Maryland.

On June 22, 2006, Duncan dropped out of the race unexpectedly citing a diagnosis of clinical depression. During the brief announcement of his withdrawal, he said that he had at first thought he was simply experiencing physical and mental fatigue associated with campaigning, but that the symptoms had progressed beyond simple fatigue, and sought medical treatment which resulted in the depression diagnosis. He cited a family history of the disease as a factor in the diagnosis, and a number of aides and political associates were quoted in the press saying that Duncan was noticeably unhappy in the period leading up to his withdrawal. During his withdrawal announcement, Duncan endorsed his Democratic primary opponent, Martin O'Malley, in the latter's race against incumbent Republican Governor Robert Ehrlich. At the time of the announcement, polls showed Duncan closing in on O'Malley even as his fundraising was beginning to decline. This weakness in fundraising had led to speculation that Duncan would drop out during the summer, even before the announcement of the depression diagnosis. Reports at the time suggested that his dropping out would have a significant effect on state politics, making it easier for O'Malley to unseat Ehrlich and lowering turnout in the Democratic primary, thereby affecting down ballot races as well.

Despite being out of political office since 2006, Duncan has remained politically active in Maryland and the Washington region.

In 2005, Duncan announced his candidacy for the Democratic Party's nomination to challenge incumbent Governor Robert Ehrlich in the 2006 Maryland gubernatorial election. His main rival in the Democratic primary election was Baltimore Mayor Martin J. O'Malley. He announced his campaign with a bus tour through each of Maryland's 23 counties and Baltimore City.

During the campaign, Duncan trailed both O'Malley and Ehrlich in fundraising. Education became a defining issue in the race; schools in Duncan's home jurisdiction of Montgomery County had a good reputation while a judge had ordered a state takeover of Baltimore's troubled special education programs in 2005. Duncan began airing television ads in May 2006, relatively early in the campaign season, and in the following weeks his poll numbers began to rise.

During his time in office, two of the County's most infamous moments occurred: the September 11 attacks, and the DC sniper attacks in October, 2002; a memorial stands in downtown Rockville, and at Brookside Gardens in Wheaton, respectively.

Amongst his many awards and accolades during his tenure, one of the most notable was being named Washingtonian of the Year in 2002.

Duncan successfully ran for Montgomery County Executive in 1994, defeating Councilman Bruce Adams by nine percentage points in the Democratic Primary and earning 63% of the vote against Steve Abrams in the general election. Duncan would go on to be re-elected twice for a then unprecedented three terms as County Executive. During Duncan's tenure as County Executive, he focused on improving educational excellence, strengthening environmental protections, fighting poverty and urban blight, and positioning Montgomery County as an international biotechnology leader and economic engine for Maryland all while managing a multi-billion dollar annual budget.

After serving three terms as Rockville City Councilman, he decided to run for Mayor of Rockville in 1987, beating incumbent Steve Van Grack. During his six years as Mayor, Doug started the process of redevelopment in downtown Rockville, including the tearing down of the Rockville Mall. That project would serve as inspiration for his revitalization of downtown Silver Spring years later as Montgomery County Executive. Accomplishments under the Duncan administration include building Wootton Parkway and Gude Drive bridge. One of his proudest accomplishments was starting Hometown Holidays, Rockville's annual Memorial Day weekend festival.

Duncan married wife, Barbara, on June 14, 1980, on the campus of Trinity College in Washington, D.C., where Barbara went to school. They met in 1978, as Barbara worked for Doug's mom, Ellie, at the Montgomery County Circuit Court. They live in Rockville, MD. They have five grown children and two grandchildren.

Duncan's first full-time experience in politics was as a field director for Charlie Gilchrist's campaign for Montgomery County Executive in 1978. Mr. Gilchrist won that race by a margin of better than 3-to-2. Deciding to run for political office himself, Duncan ran for and was elected to Rockville City Council in 1982 at the age of 26. He would be re-elected twice to that position. In 1984, Duncan called for the resignation of then-Mayor John Freeland, who had taken a job with a city developer, claiming it was a rank conflict of interest. Freeland resigned that year.

Duncan attended St. John's College High School in Washington, D.C., graduating in 1973. He graduated from Columbia University in three years, in 1976, earning a bachelor's degree with a double focus in psychology and political science. Upon graduating, Doug worked for Montgomery County's criminal justice commission, and then spent 13 years in the private sector working in the telecommunications industry for AT&T.

Douglas M. Duncan (born October 25, 1955) is a former American politician from Maryland who served as Rockville City Councilman, Rockville Mayor, Montgomery County Executive, and candidate for Maryland Governor. He is a member of the Democratic Party. Duncan currently serves as president and CEO of Leadership Greater Washington, a position he has held since 2014.

Duncan was born on October 25, 1955. The fifth of 13 children, Duncan grew up in the Twinbrook section of Rockville, Maryland, a working-class neighborhood, home to federal employees, teachers, police officers and firefighters. His father worked for the NSA and later worked for the Montgomery County Public Schools as a volunteer tutor and ESOL teacher. His mother worked for the Montgomery County Circuit Court as a courtroom clerk from 1973 to 1999.