Elections / 2020 · Senate · MA
The Democratic candidate won Massachusetts's Senate seat D+33.2.
Massachusetts, 2020. Candidate results and statewide totals below. The presidential race shared this ballot.
Massachusetts — 2020 Senate result
Source: MIT Election Data + Science Lab, 1976–2024 Senate returns (party-classified by literal ballot party).
Democratic (D)
2,357,809
66.3%
Republican (R)
1,177,765
33.1%
All others
21,134
0.6%
Margin
D+33.2
Candidates
Statewide candidate totals — MIT Election Data + Science Lab, 2020 Senate returns.
| Candidate | Party | Votes | Share |
|---|---|---|---|
| Edward J. Markey | DDemocrat | 2,357,809 | 66.3% |
| Kevin J. O'Conner | RRepublican | 1,177,765 | 33.1% |
| Shiva Ayyadurai | OOther | 21,134 | 0.6% |
Massachusetts's Senate margins
Every contest in our store, 1976–2024
| Year | Margin (D minus R) |
|---|---|
| 1976 | +40.3% |
| 1978 | +10.2% |
| 1982 | +22.6% |
| 1984 | +10.1% |
| 1988 | +31.0% |
| 1990 | +13.6% |
| 1994 | +17.1% |
| 1996 | +7.5% |
| 2000 | +59.8% |
| 2002 | +81.0% |
| 2006 | +38.8% |
| 2008 | +34.9% |
| 2012 | +7.5% |
| 2014 | +23.9% |
| 2018 | +24.2% |
| 2020 | +33.2% |
| 2024 | +19.8% |