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Missouri state legislative special elections, 2021

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In 2021, one special election was called to fill a vacant seat in the Missouri General Assembly.

Click here to read more about the special elections.

House special elections called:

How vacancies are filled in Missouri


If there is a vacancy in the Missouri General Assembly, the governor of Missouri must call for a special election without delay. The election mandate is sent to the county or counties in the legislative district.[1]

DocumentIcon.jpg See sources: Missouri Cons. Art. III, §14 and Missouri Rev. Stat. tit. III Ch. 21 §110

About the legislature

The Missouri General Assembly is a bicameral body composed of the Missouri House of Representatives, with 163 members, and the Missouri State Senate, with 34 members.

The boxes below show the partisan composition of both chambers directly before and after the most recent general elections prior to 2021. For the most up-to-date numbers on partisan composition in this legislature, see here (Senate) and here (House).

Missouri State Senate
Party As of November 3, 2020 After November 4, 2020
     Democratic Party 8 10
     Republican Party 23 24
     Vacancy 3 0
Total 34 34
Missouri House of Representatives
Party As of November 3, 2020 After November 4, 2020
     Democratic Party 48 49
     Republican Party 113 114
     Vacancy 2 0
Total 163 163

Special elections

Click [show] to the right of the district name for more information:

April 6, 2021

Historical data

There were 782 state legislative special elections that took place from 2010 to 2020. Missouri held 27 special elections during the same time period; about two per year on average. The largest number of special elections in Missouri took place in 2019 when six special elections were held.

The table below details how many state legislative special elections were held in a state in a given year.

Special elections throughout the country

See also: State legislative special elections, 2021

In 2021, 66 state legislative special elections were held in 21 states. Between 2011 and 2020, an average of 75 special elections took place each year.

Breakdown of 2021 special elections

In 2021, special elections for state legislative positions were held for the following reasons:

  • 27 due to appointment, election, or the seeking of election to another position
  • 23 due to resignation
  • 4 due to a resignation related to criminal charges
  • 12 due to the death of the incumbent

Impact of special elections on partisan composition

The partisan breakdown for the special elections was as follows:

The table below details how many seats changed parties as the result of a special election in 2021. The number on the left reflects how many vacant seats were originally held by each party, while the number on the right shows how many vacant seats each party won in the special elections. In elections between 2011 and 2020, either the Democratic Party or Republican Party saw an average net gain of four seats across the country.

Note: This table reflects information for elections that were held and not the total number of vacant seats.

Partisan Change from Special Elections (2021)
Party As of Special Election After Special Election
     Democratic Party 33 33
     Republican Party 33 33
     Independent 0 0
Total 66 66

Flipped seats

In 2021, six seats flipped as a result of state legislative special elections.

Seats flipped from D to R

Seats flipped from R to D


See also

Footnotes

  1. ↑ Missouri General Assembly, "Missouri Constitution," accessed February 4, 2021 (Article 3, Section 14)
  2. ↑ Twitter, "Boone County Clerk on January 6, 2021," accessed January 12, 2021
  3. ↑ Missourian, "Kendrick explains decision behind resigning from state House," November 16, 2020
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