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California House District 21 Election Results

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

California House District 21 was held by Democratic after the 2018 general election, a two-party margin of 100.0 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 Republican 0 65,423 0.0% 100.0 pts
1974 Democratic 47,062 22,713 67.5% 34.9 pts
1976 Democratic 63,555 29,472 68.3% 36.6 pts
1978 Democratic 35,865 30,829 53.8% 7.5 pts
1980 Democratic 57,903 34,976 62.3% 24.7 pts
1982 Democratic 64,367 25,941 71.3% 42.5 pts
1984 Democratic 79,488 34,965 69.5% 38.9 pts
1986 Democratic 59,042 21,137 73.6% 47.3 pts
1988 Democratic 101,243 0 100.0% 100.0 pts
1990 Democratic 62,719 25,695 70.9% 41.9 pts
1992 Democratic 105,327 55,497 65.5% 31.0 pts
1994 Democratic 79,186 47,219 62.6% 25.3 pts
1996 Democratic 92,950 52,855 63.8% 27.5 pts
1998 Democratic 89,221 35,053 71.8% 43.6 pts
2000 Democratic 82,466 53,140 60.8% 21.6 pts
2002 Democratic 72,104 42,808 62.8% 25.5 pts
2004 Democratic 98,002 92,118 51.5% 3.1 pts
2006 Democratic 95,104 45,314 67.7% 35.5 pts
2008 Democratic 133,856 54,849 70.9% 41.9 pts
2010 Democratic 89,927 52,809 63.0% 26.0 pts
2012 Democratic 63,349 45,534 58.2% 16.4 pts
2014 Democratic 34,931 30,499 53.4% 6.8 pts
2016 Democratic 85,990 37,230 69.8% 39.6 pts
2018 Democratic 68,085 0 100.0% 100.0 pts

Winning Margin Over Time

1972: Republican margin 100.0 pts 1974: Democratic margin 34.9 pts 1976: Democratic margin 36.6 pts 1978: Democratic margin 7.5 pts 1980: Democratic margin 24.7 pts 1982: Democratic margin 42.5 pts 1984: Democratic margin 38.9 pts 1986: Democratic margin 47.3 pts 1988: Democratic margin 100.0 pts 1990: Democratic margin 41.9 pts 1992: Democratic margin 31.0 pts 1994: Democratic margin 25.3 pts 1996: Democratic margin 27.5 pts 1998: Democratic margin 43.6 pts 2000: Democratic margin 21.6 pts 2002: Democratic margin 25.5 pts 2004: Democratic margin 3.1 pts 2006: Democratic margin 35.5 pts 2008: Democratic margin 41.9 pts 2010: Democratic margin 26.0 pts 2012: Democratic margin 16.4 pts 2014: Democratic margin 6.8 pts 2016: Democratic margin 39.6 pts 2018: Democratic margin 100.0 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 21 at the 2018 election?

Democratic held California House District 21 at the 2018 general election, with a two-party margin of 100.0 points.

Which parties have held California House District 21 since 1972?

Since 1972, California House District 21 has been held by: Democratic, Republican.

What was the closest two-party race on record in California House District 21?

The closest two-party margin on record for California House District 21 was 2004, at just 3.1 percentage points.