Martin O'Malley is an American politician and member of the Democratic Party. He served as the Governor of Maryland from 2007 to 2015. Before his governorship, O'Malley was the Mayor of Baltimore from 1999 to 2007. He is known for his focus on urban development, education reform, and public safety during his time in office. In 2016, O'Malley ran for the Democratic Party nomination for President of the United States but was not successful. He has also been involved in various initiatives related to climate change and social justice. O'Malley is recognized for his commitment to progressive policies and community engagement.