2020 Massachusetts House of Representatives election

The 2020 Massachusetts House of Representatives election took place on November 3, 2020. It elected members of the Massachusetts House of Representatives. Democrats achieved a net gain of 1 seat. One independent, Susannah Whipps, was also elected. Incumbent Speaker Robert DeLeo won re-election but resigned before the new session to take a position at Northeastern University; Ronald Mariano replaced him as Speaker.

Closest races
Seats where the margin of victory was under 10%:
 * 1) 2nd Barnstable District, 8.3% (gain)
 * 2) 5th Barnstable District, 4.3%
 * 3) 14th Bristol District, 8.9% (gain)
 * 4) 1st Essex District, 3.3%
 * 5) 2nd Essex District, 2.6%
 * 6) 13th Essex District, 9.2%
 * 7) 4th Hampden District, 8% (gain)
 * 8) 7th Hampden District, 0.8%
 * 9) 1st Middlesex District, 3.1%
 * 10) 5th Plymouth District, 1.4%
 * 11) 12th Plymouth District, 9.5%