CA-42 elected a Republican in 2020.

R+14.3 on 368,047 certified votes. Below: the 2020 result and this district's margin across every cycle on record.

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CA-42 — 2020 result

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

Democratic (D)

157,773

42.9%

Republican (R)

210,274

57.1%

All others

0

0.0%

Margin

R+14.3

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Margin history

CA-42 across every cycle on record. Each year links to its district page.

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Year	Won	Margin	Votes
2024	D	+36.3%	233,563
2022	D	+36.7%	145,120
2020	R	−14.3%	368,047
2018	R	−13.0%	231,932
2016	R	−17.6%	254,236
2014	R	−31.5%	113,390
2012	R	−21.2%	214,947
2010	R	−30.4%	204,398
2008	R	−20.3%	263,313
2006	R	−100.0%	129,720
2004	R	−36.3%	246,025
2002	R	−38.8%	145,246
2000	D	+24.6%	151,577
1998	D	+15.0%	112,520
1996	D	+1.0%	103,336
1994	D	+2.3%	115,205
1992	D	+6.7%	157,455
1990	R	−22.9%	184,286
1988	R	−31.2%	238,621
1986	R	−48.1%	192,711
1984	R	−48.3%	243,619
1982	R	−40.6%	207,049
1980	R	−6.5%	149,649
1978	D	+47.5%	115,445
1976	D	+52.0%	135,627