Nyman was found dead in his pool. The Plymouth district attorney's office ruled the death an accidental drowning. Nyman represented the Fifth Plymouth District, which consists of Norwell, Rockland, and his hometown of Hanover. He left a wife and two children.
In an election to succeed Nyman, his wife Rhonda did not have a primary opponent and defeated her Republican opponent in the general election.
- "Massachusetts state legislator found dead in pool". CNN. June 26, 2010.
- Legere, Christine (July 2, 2010). "Nyman's friends, family say goodbye". The Boston Globe. Retrieved 2010-07-06. CS1 maint: discouraged parameter (link)