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California House District 51 Election Results

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

California House District 51 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 Democratic 59,950 17,753 77.2% 54.3 pts
1974 Republican 28,142 53,185 34.6% 30.8 pts
1976 Republican 42,047 66,235 38.8% 22.3 pts
1978 Republican 27,235 58,101 31.9% 36.2 pts
1980 Republican 20,139 82,876 19.6% 60.9 pts
1982 Republican 34,775 77,833 30.9% 38.2 pts
1984 Republican 38,406 93,014 29.2% 41.5 pts
1986 Republican 30,056 75,879 28.4% 43.3 pts
1988 Republican 47,780 87,394 35.4% 29.3 pts
1990 Republican 39,016 60,580 39.2% 21.6 pts
1992 Democratic 74,904 11,236 87.0% 73.9 pts
1994 Democratic 46,037 20,151 69.5% 39.1 pts
1996 Democratic 58,333 21,334 73.2% 46.4 pts
1998 Democratic 52,951 13,202 80.0% 60.1 pts
2000 Democratic 70,169 19,910 77.9% 55.8 pts
2002 Democratic 50,191 0 100.0% 100.0 pts
2004 Democratic 89,509 0 100.0% 100.0 pts
2006 Democratic 52,671 16,241 76.4% 52.9 pts
2008 Democratic 95,589 23,515 80.3% 60.5 pts
2010 Democratic 69,111 0 100.0% 100.0 pts
2012 Democratic 105,910 0 100.0% 100.0 pts
2014 Democratic 42,261 8,277 83.6% 67.2 pts
2016 Democratic 110,036 0 100.0% 100.0 pts
2018 Democratic 100,469 0 100.0% 100.0 pts

Winning Margin Over Time

1972: Democratic margin 54.3 pts 1974: Republican margin 30.8 pts 1976: Republican margin 22.3 pts 1978: Republican margin 36.2 pts 1980: Republican margin 60.9 pts 1982: Republican margin 38.2 pts 1984: Republican margin 41.5 pts 1986: Republican margin 43.3 pts 1988: Republican margin 29.3 pts 1990: Republican margin 21.6 pts 1992: Democratic margin 73.9 pts 1994: Democratic margin 39.1 pts 1996: Democratic margin 46.4 pts 1998: Democratic margin 60.1 pts 2000: Democratic margin 55.8 pts 2002: Democratic margin 100.0 pts 2004: Democratic margin 100.0 pts 2006: Democratic margin 52.9 pts 2008: Democratic margin 60.5 pts 2010: Democratic margin 100.0 pts 2012: Democratic margin 100.0 pts 2014: Democratic margin 67.2 pts 2016: Democratic margin 100.0 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 51 at the 2018 election?

Democratic held California House District 51 at the 2018 general election, with a two-party margin of 100.0 points.

Which parties have held California House District 51 since 1972?

Since 1972, California House District 51 has been held by: Democratic, Republican.

What was the closest two-party race on record in California House District 51?

The closest two-party margin on record for California House District 51 was 1990, at just 21.6 percentage points.