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California House District 20 Election Results

Compiled by EveryElectionResult.com's data team · Last updated 2026-08-30

California House District 20 was held by Democratic after the 2018 general election, a two-party margin of 54.9 points. This page covers every general election on record for this district from 1972 to 2018.

This page covers the state House (lower chamber) general election only, two-party vote totals (Democratic vs. Republican). District lines here are redrawn at least once a decade, so an older and newer election under the same district number don't necessarily cover the same voters -- see the sourcing note below.

Results by Election

ElectionWinning PartyDem. VotesGOP VotesDem. ShareMargin
1972 Democratic 35,156 14,649 70.6% 41.2 pts
1974 Republican 31,757 56,421 36.0% 28.0 pts
1976 Republican 32,726 74,214 30.6% 38.8 pts
1978 Republican 45,397 49,975 47.6% 4.8 pts
1980 Republican 25,505 74,656 25.5% 49.1 pts
1982 Republican 34,102 72,091 32.1% 35.8 pts
1984 Republican 41,526 95,758 30.2% 39.5 pts
1986 Republican 54,099 56,469 48.9% 2.1 pts
1988 Democratic 72,485 62,789 53.6% 7.2 pts
1990 Democratic 71,386 36,226 66.3% 32.7 pts
1992 Democratic 83,889 47,044 64.1% 28.1 pts
1994 Democratic 47,498 40,885 53.7% 7.5 pts
1996 Democratic 70,130 44,270 61.3% 22.6 pts
1998 Democratic 52,132 38,239 57.7% 15.4 pts
2000 Democratic 75,455 35,889 67.8% 35.5 pts
2002 Democratic 53,304 23,108 69.8% 39.5 pts
2004 Democratic 87,724 40,114 68.6% 37.2 pts
2006 Democratic 61,238 32,548 65.3% 30.6 pts
2008 Democratic 99,305 39,861 71.4% 42.7 pts
2010 Democratic 76,446 28,460 72.9% 45.7 pts
2012 Democratic 133,139 0 100.0% 100.0 pts
2014 Democratic 56,144 22,007 71.8% 43.7 pts
2016 Democratic 114,001 39,507 74.3% 48.5 pts
2018 Democratic 105,775 30,838 77.4% 54.9 pts

Winning Margin Over Time

1972: Democratic margin 41.2 pts 1974: Republican margin 28.0 pts 1976: Republican margin 38.8 pts 1978: Republican margin 4.8 pts 1980: Republican margin 49.1 pts 1982: Republican margin 35.8 pts 1984: Republican margin 39.5 pts 1986: Republican margin 2.1 pts 1988: Democratic margin 7.2 pts 1990: Democratic margin 32.7 pts 1992: Democratic margin 28.1 pts 1994: Democratic margin 7.5 pts 1996: Democratic margin 22.6 pts 1998: Democratic margin 15.4 pts 2000: Democratic margin 35.5 pts 2002: Democratic margin 39.5 pts 2004: Democratic margin 37.2 pts 2006: Democratic margin 30.6 pts 2008: Democratic margin 42.7 pts 2010: Democratic margin 45.7 pts 2012: Democratic margin 100.0 pts 2014: Democratic margin 43.7 pts 2016: Democratic margin 48.5 pts 2018: Democratic margin 54.9 pts 1972 1974 1976 1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018

Frequently Asked Questions

Which party held California House District 20 at the 2018 election?

Democratic held California House District 20 at the 2018 general election, with a two-party margin of 54.9 points.

Which parties have held California House District 20 since 1972?

Since 1972, California House District 20 has been held by: Democratic, Republican.

What was the closest two-party race on record in California House District 20?

The closest two-party margin on record for California House District 20 was 1986, at just 2.1 percentage points.