Mayor of Portland, Maine

Mayor Mark Dion is a native of Lewiston, ME. He later earned a B.A. in criminology at the University of Southern Maine, an M.A. in human services administration from Antioch University New England, and a J.D. from the University of Maine School of Law. He has also completed the Senior Executive Program for State and Local Government at the JFK School and the Mayoral Orientation Program at the Bloomberg Institute for Cities.

A Democrat, Dion was elected for three terms as Sheriff for Cumberland County, Maine, in 1998. In 2010, he successfully sought a seat in the Maine House of Representatives. He was later named Chair of both the Criminal Justice and Public Safety Committee as well as the Committee on Energy, Utilities, and Technology. In 2016, he was elected to the Maine Senate, where he served one term.

Dion was first elected to the Portland City Council in 2020 and won the election for Mayor on November 7th, 2023.