Ruth B. Balser holds a PhD from New York University and a bachelor's degree from the University of Rochester, establishing a robust academic foundation. She has dedicated her career to public service, beginning with her tenure as an alderman for the City of Newton. Balser has been a member of the Massachusetts House of Representatives since 1999, where she has focused extensively on mental health and substance abuse issues, serving two terms as the House Chair of the Joint Committee on Mental Health and Substance Abuse. Her political career includes notable actions such as opposing Thomas Finneran's renewal as House Speaker and benefiting from subsequent leadership changes. Balser ran for mayor of Newton in 2009, garnering significant support but ultimately losing the election.

Ruth B. Balser's political identity is shaped by a nuanced approach to mental health policy, balancing progressive advocacy with pragmatic considerations. Balser's tenure as the House Chair of the Joint Committee on Mental Health and Substance Abuse indicates a deep commitment to these issues, yet her legislative record reveals unexpected alliances with opposing factions on environmental regulations. Balser's political fortunes shifted with the change in House leadership, suggesting an ability to navigate and leverage power dynamics effectively. Her mayoral campaign, despite a narrow loss, was backed by The Boston Globe, highlighting her credibility and appeal beyond party lines.