Massachusetts has nine congressional districts, all of which are held by Democrats. None are seen as competitive in 2018. It is the state with both the largest number of districts under single party control and is tied with Indiana and Tennessee as states with the most districts where not a single one is competitive.
To create your own forecast for the midterms, visit the 2018 House Interactive Map.
(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
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