Missouri Senate / Missouri House
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2020 Election Update
Heading into the 2020 election, Republicans controlled the Missouri House 115 to 48. Democrats flipped one seat (HD 135) for a net gain of one seat. Republicans now control the chamber 114 to 49.
The below table shows 2020 and 2018 election results for the Missouri House. The LDI scores are for the 2020 cycle. EveryDistrict will release new scores and district rankings after the redistricting process.
2019 Election Update
On Election Day 2019, Democrats flipped GOP-leaning House District 99 in a special election. Republicans now control the Missouri State House 115-48.
2018 Election Update
After the 2016 election, Republicans controlled the Missouri State House 117-46. In 2017, Democrats flipped formerly Republican-held HD 97, leaving control of the chamber at 116-47.
In the 2018 election, Democrats flipped three Republican-held seats and lost three Democratic-held seats resulting in no partisan change to the composition of the Missouri State House.
Democrats won HD 14, HD 35, and HD 70. Democrats lost HD 10, HD 97, and HD 118.
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.