2004Final results
2004 election for Massachusetts State Senate: Middlesex–Essex
Massachusetts State Senate · Massachusetts
Richard R. Tisei (R) won re-election with 56.6% of the vote, defeating Katherine Clark (D) by 13.3 points.
Richard R. TiseiRepublican · winner · incumbent
56.6%41,305
Katherine ClarkDemocrat
43.4%31,638
72,943 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 2004
Races before and after
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)