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California House District 40 Election Results

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

California House District 40 was held by Democratic after the 2018 general election, a two-party margin of 18.0 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 Democratic 21,855 12,141 64.3% 28.6 pts
1974 Democratic 40,537 20,115 66.8% 33.7 pts
1976 Democratic 59,792 30,877 66.0% 31.9 pts
1978 Democratic 48,653 25,155 65.9% 31.8 pts
1980 Democratic 56,447 25,678 68.7% 37.5 pts
1982 Democratic 65,110 25,880 71.6% 43.1 pts
1984 Democratic 71,144 33,295 68.1% 36.2 pts
1986 Democratic 60,811 22,899 72.6% 45.3 pts
1988 Democratic 75,161 26,034 74.3% 48.5 pts
1990 Democratic 47,215 20,113 70.1% 40.2 pts
1992 Democratic 66,597 35,111 65.5% 31.0 pts
1994 Democratic 45,926 28,764 61.5% 23.0 pts
1996 Democratic 51,960 27,248 65.6% 31.2 pts
1998 Democratic 51,145 18,998 72.9% 45.8 pts
2000 Democratic 70,463 22,808 75.5% 51.1 pts
2002 Democratic 44,191 34,038 56.5% 13.0 pts
2004 Democratic 69,421 50,323 58.0% 15.9 pts
2006 Democratic 50,807 29,325 63.4% 26.8 pts
2008 Democratic 72,360 32,973 68.7% 37.4 pts
2010 Democratic 56,208 36,069 60.9% 21.8 pts
2012 Republican 64,264 65,282 49.6% 0.8 pts
2014 Republican 31,309 39,303 44.3% 11.3 pts
2016 Republican 74,589 76,537 49.4% 1.3 pts
2018 Democratic 72,734 50,589 59.0% 18.0 pts

Winning Margin Over Time

1972: Democratic margin 28.6 pts 1974: Democratic margin 33.7 pts 1976: Democratic margin 31.9 pts 1978: Democratic margin 31.8 pts 1980: Democratic margin 37.5 pts 1982: Democratic margin 43.1 pts 1984: Democratic margin 36.2 pts 1986: Democratic margin 45.3 pts 1988: Democratic margin 48.5 pts 1990: Democratic margin 40.2 pts 1992: Democratic margin 31.0 pts 1994: Democratic margin 23.0 pts 1996: Democratic margin 31.2 pts 1998: Democratic margin 45.8 pts 2000: Democratic margin 51.1 pts 2002: Democratic margin 13.0 pts 2004: Democratic margin 15.9 pts 2006: Democratic margin 26.8 pts 2008: Democratic margin 37.4 pts 2010: Democratic margin 21.8 pts 2012: Republican margin 0.8 pts 2014: Republican margin 11.3 pts 2016: Republican margin 1.3 pts 2018: Democratic margin 18.0 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 40 at the 2018 election?

Democratic held California House District 40 at the 2018 general election, with a two-party margin of 18.0 points.

Which parties have held California House District 40 since 1972?

Since 1972, California House District 40 has been held by: Democratic, Republican.

What was the closest two-party race on record in California House District 40?

The closest two-party margin on record for California House District 40 was 2012, at just 0.8 percentage points.