Dedham residents supported their own US Representative – Stephen F. Lynch – in the Democratic primary for US Senate, and Republicans narrowly selected Gabriel E. Gomez.
Edward J. Markey, a Malden Democrat who is the US Congressman from the fifth Massachusetts District, won the state overall. Gomez also won the Republican primary statewide.
Dedham Democrats favored eighth Massachusetts District Congressman Lynch over Markey by a 2,380 to 1,233 margin with three write-in votes. Republicans in Dedham voted 346 for Gomez, 328 for Michael J. Sullivan, and 100 for Daniel B. Winslow, with four write-in votes.
A total of 4,396 ballots were cast, which makes up a voter turnout of 22.1 percent, according to Town Clerk records.