| Registered: | 4,812,909 [1] (5.20 pp) |
| Turnout: | 76.00% (15.84 pp) |
| Election Name: | 2020 Massachusetts Senate election |
| Country: | Massachusetts |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 2018 Massachusetts Senate election |
| Previous Year: | 2018 |
| Next Election: | 2022 Massachusetts Senate election |
| Next Year: | 2022 |
| Seats For Election: | All 40 seats in the Massachusetts Senate |
| Majority Seats: | 21 |
| Election Date: | November 3, 2020 |
| Leader1: | Karen Spilka |
| Party1: | Massachusetts Democratic Party |
| Leader Since1: | February 28, 2018 |
| Leaders Seat1: | 2nd Middlesex and Norfolk |
| Last Election1: | 36 seats |
| Seats Before1: | 36 |
| Seats1: | 37 |
| Seat Change1: | 1 |
| Leader2: | Bruce Tarr |
| Party2: | Massachusetts Republican Party |
| Leader Since2: | January 3, 2011 |
| Leaders Seat2: | 1st Essex and Middlesex |
| Last Election2: | 4 seats |
| Seats Before2: | 4 |
| Seats2: | 3 |
| Seat Change2: | 1 |
| Map Size: | 350px |
| President | |
| Before Election: | Karen Spilka |
| Before Party: | Massachusetts Democratic Party |
| After Election: | Karen Spilka |
| After Party: | Massachusetts Democratic Party |
The 2020 Massachusetts Senate election took place on November 3, 2020 to elect members of the Massachusetts Senate.[2]
The following are the qualifications to be elected to the Massachusetts Senate:[3]
Seats where the margin of victory was under 10%:
| align=center | 1st Bristol and Plymouth District • Worcester and Middlesex • District 3 • District 4 • District 5 • District 6 • District 7 • District 8 • District 9 • District 10 • District 11 • District 12 • District 13 • District 14 • District 15 • District 16 • District 17 • District 18 • District 19 • District 20 • District 21 • District 22 • District 23 • District 24 • District 25 • District 26 • District 27 • District 28 • District 29 • District 30 • District 31 • District 32 • District 33 • District 34 • District 35 • District 36 • District 37 • District 38 • District 39 • District 40 |