Hover over a district for details.
|District||Incumbent||Party||Since||Term||Predictions||Margin of Victory|
Incumbent not running for re-election in 2018.
|MA-4||Joseph Kennedy III||2013||3rd||
Incumbent defeated in Democratic primary for 2018 election.
(a)Source: Ballotpedia (for margins). The margin is the percentage difference between the top two vote-getters in 2016.
More recent results (i.e., special elections held in 2017-18 for vacancies) are not displayed. * Race was uncontested | ^Top two vote-getters were from the same party
(b)Source: Daily Kos. The margin is the percentage difference between Donald Trump and Hillary Clinton.