MA-03 elected a Democrat in 2018.

D+28.5 on 279,327 certified votes. Below: the 2018 result and this district's margin across every cycle on record.

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MA-03 — 2018 result

Source: MIT Election Data + Science Lab, US House returns (party-classified by literal ballot party).

Democratic (D)

173,175

62.0%

Republican (R)

93,445

33.5%

All others

12,707

4.5%

Margin

D+28.5

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Margin history

MA-03 across every cycle on record. Each year links to its district page.

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Year	Won	Margin	Votes
2024	D	+73.0%	362,678
2022	D	+26.2%	251,389
2020	D	+97.7%	293,539
2018	D	+28.5%	279,327
2016	D	+37.5%	344,592
2014	D	+26.0%	220,946
2012	D	+31.9%	321,753
2010	D	+17.3%	217,352
2008	D	+98.5%	231,107
2006	D	+98.8%	168,956
2004	D	+41.1%	272,412
2002	D	+98.8%	157,545
2000	D	+98.8%	215,561
1998	D	+15.4%	190,878
1996	D	+7.6%	255,097
1994	R	−10.4%	212,035
1992	R	−6.1%	260,932
1990	D	+65.5%	230,432
1988	D	+99.8%	191,383
1986	D	+75.0%	160,202
1984	D	+34.8%	220,254
1982	D	+99.9%	142,740
1980	D	+44.6%	195,783
1978	D	+50.4%	158,730
1976	D	+100.0%	168,568