OR-01 elected a Democrat in 2018.

D+31.6 on 363,249 certified votes. Below: the 2018 result and this district's margin across every cycle on record.

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OR-01 — 2018 result

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

Democratic (D)

231,198

63.6%

Republican (R)

116,446

32.1%

All others

15,605

4.3%

Margin

D+31.6

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Margin history

OR-01 across every cycle on record. Each year links to its district page.

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Year	Won	Margin	Votes
2024	D	+40.5%	351,991
2022	D	+36.0%	310,243
2020	D	+29.4%	459,899
2018	D	+31.6%	363,249
2016	D	+22.6%	378,095
2014	D	+22.8%	279,253
2012	D	+26.6%	331,980
2010	D	+12.8%	292,909
2008	D	+71.5%	332,248
2006	D	+29.1%	269,627
2004	D	+19.4%	354,338
2002	D	+28.7%	238,036
2000	D	+20.3%	303,521
1998	D	+3.0%	239,496
1996	D	+6.6%	278,604
1994	D	+0.1%	253,989
1992	D	+4.1%	294,154
1990	D	+32.7%	238,259
1988	D	+39.2%	258,603
1986	D	+23.4%	229,495
1984	D	+6.2%	260,667
1982	D	+7.7%	220,378
1980	D	+31.9%	308,635
1978	D	+25.8%	252,378
1976	D	+17.3%	264,000