Mike Day

Michael Seamus Day is a member of the Massachusetts House of Representatives, sworn in January 2015. An attorney from Stoneham, Massachusetts, Day was elected as a Democrat to represent the 31st Middlesex district. After working as a Special Assistant District Attorney in Middlesex County, he founded his own law firm in 2012.

He has served as the House Chair of the Joint Committee on the Judiciary since 2021.

He and his wife Megan live in Stoneham and are raising three sons and care for two rescue dogs and two guinea pigs in their home. He has coached as a volunteer for Stoneham Youth Hockey since 2011.

Education Day graduated from Phillips Academy Andover and UMass-Amherst before earning his law degree from Georgetown University, where he attended the night division while working a full-time job in Washington, D.C.

Committee Assignments For the 2025-26 Session, Day sits on the following committees in the House:

Chairperson, Joint Committee on the Judiciary House Committee on Ethics

For the 2023-24 Session, Day sat on the following committees in the House:

Chairperson, Joint Committee on the Judiciary House Committee on Operations, Facilities and Security Special Joint Committee on Initiative Petitions

For the 2021-22 Session, Day sat on the following committees in the House:

Chairperson, Joint Committee on the Judiciary House Committee on Operations, Facilities and Security

For the 2019-20 Session, Day sat on the following committees in the House:

Vice Chair, Joint Committee on the Judiciary House Committee on Personnel and Administration House Committee on Post Audit and Oversight Joint Committee on Economic Development and Emerging Technologies

For the 2017-18 Session, Day sat on the following committees in the House:

Vice Chair, House Committee on Personnel and Administration House Committee on Post Audit and Oversight Joint Committee on Financial Services Joint Committee on Mental Health, Substance Use and Recovery Joint Committee on the Judiciary

For the 2015-16 Session, Day sat on the following committees in the House:

House Committee on Post Audit and Oversight Joint Committee on Education Joint Committee on Mental Health and Substance Abuse Joint Committee on the Judiciary

Electoral history