Ruthanne Fuller, the first woman to serve as the city’s chief executive, said Tuesday she would not seek a third term next year.

"I’m all in on working as hard as ever for the next 394 days as your Mayor. There is much to do," she said Tuesday.

Newton Mayor Ruthanne Fuller announced Tuesday she would not seek a third term. Her decision not to run opens up the top elected position in the state's 12th largest city, and adds to Newton's ongoing political overhaul.

Ruthanne Fuller will not seek a third term as mayor of Newton, according to an email announcement she sent Tuesday.