Here you'll find answers to the most frequently asked questions, downloadable forms to help you manage your lease, and essential telephone numbers. The Voter Registration form for Middlesex County should also be used for Change of address, Name Change or Party Change.Find and download various legal forms, brochures, and self-help kits. If a form does not open, right-click the link to save it to your computer. How do I file a change of name for an adult? NOTE: Some links here lead to "fill-able" PDF forms. Apply to let the County Clerk know you would like a mail-in ballot. Court papers asking for the change, this includes: Name Change Petition and Proposed Order. To change your name legally as an adult in Massachusetts, you need to go through a court name change proceeding. Voter Registration Deadline for the Primary Election is May 20, 2025.