99chambers

Massachusetts State Senate seat · former district

Massachusetts State Senate: MIDDLESEX 7

3 elections since 1968: Democrats won 0, Republicans 3.

1972 election

Nov 7, 1972
  1. Ronald C. Mackenzie (R) · won · incumbent65.4%
  2. William G. Shaughnessy (D)34.6%

Full results →

Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET

Every election for this seat

3 races since 1968. District numbers are redrawn after each census: each group is one set of lines.

YearWinnerRunner-upWon by
Lines first used in 1972
1972Ronald C. Mackenzie (R)William G. Shaughnessy (D)30.7
Lines first used in 1962
1970Ronald C. Mackenzie (R)Philip N. Bredsen (D)34.6
1968Ronald C. Mackenzie (R)John J. Maguire (D)10.1

Won by: the winner's lead over the runner-up, in points of the vote. Source: 99chambers results archive (MEDSL, Klarner, state election offices)