California Senate / California House
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2020 Election Update
Heading into the 2020 election, Democrats controlled the California House 61-18 with one Independent. Republicans flipped one seat (HD 38). Democrats now control the chamber 60 to 19 with one Independent.
The below table shows 2020 and 2018 election results for the California House. The LDI scores are for the 2020 cycle. EveryDistrict will release new scores and district rankings after the redistricting process.
2018 Election Update
After the 2016 election, Democrats controlled the California State House 55-25. In the 2018 election, Democrats flipped five seats. Democrats now control the California State House 60-20.
Democrats flipped HD 16, HD 38, HD 40, HD 74, and HD 76.
In December 2019, Chad Mayes (HD 42) changed his party affiliation from Republican to Independent. In January 2019, Brian Maienschein (HD 77) changed his party affiliation from Republican to Democrat, giving Democrats a 61-18-1 advantage in the House.
Understanding the Map
EveryDistrict’s Legislative District Index (LDI) is the gold standard of state legislative competitiveness. Our LDI ranks state legislative districts on a scale from 100 to -100, using statewide elections data. Districts with a score of 100 would vote for statewide Democratic candidates by an average of 100 points (with the Democratic candidate receiving 100% of the vote); districts with a score of -100 would vote for statewide Republican candidates by an average of 100 points (with the Republican candidate receiving 100% of the vote). For a more realistic example, a district with a score of 10 would vote for statewide Democratic candidates by an average of 10 points (meaning we would expect the Democratic state legislative candidate to win with 55% of the vote compared to the Republican winning 45% of the vote).
After the 2018 election, EveryDistrict reviewed and enhanced our LDI system, improving the accuracy of the metric with new methodologies and the most recent electoral data.
For more information about EveryDistrict’s LDI, please click here.