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2021 Missouri legislative session |
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General information |
Session start: January 6, 2021 Session end: May 14, 2021 |
Leadership |
Senate President TBD House Speaker |
Elections |
Next Election: November 8, 2022 Last Election: November 3, 2020 |
Previous legislative sessions |
2020 • 2019 • 2018 |
Other 2021 legislative sessions |
In 2021, the Missouri State Legislature was scheduled to convene on January 6 and adjourn on May 14.
The legislators serving in this session took office following the 2020 elections. Republicans won a 24-10 majority in the Senate and a 114-49 majority in the House. The party also controlled the governorship, creating a Republican state government trifecta. At the start of the 2021 session, Missouri was one of 22 state legislatures where one party had a veto-proof supermajority in both chambers.
Redistricting is the process by which states draw new Congressional and state legislative districts following the U.S. Census. Officials sent data from the 2020 U.S. Census to states in early 2021 to begin the process of redistricting. As of the 2020 census, congressional district boundaries in Missouri were drawn by the state legislature, while two separate politician commissions enacted state Senate and House district lines.
Missouri was one of 22 Republican state government trifectas at the start of 2021 legislative sessions. A state government trifecta occurs when one political party holds the governor's office, a majority in the state Senate, and a majority in the state House. For more information about state government trifectas, click here.
Missouri was also one of 22 state legislatures where one party had a veto-proof supermajority in both chambers. Veto overrides occur when a legislature votes to reverse a veto issued by an executive such as a governor or the president. If one party has a majority in a state legislature that is large enough to override a gubernatorial veto without any votes from members of the minority party, it is called a veto-proof majority or, sometimes, a supermajority. To read more about veto-proof supermajorities in state legislatures, click here.
The following tables show the partisan breakdown of the Missouri State Legislature in the 2021 legislative session.
Party | As of January 2021 | |
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Democratic Party | 10 | |
Republican Party | 24 | |
Total | 34 |
Party | As of January 2021 | |
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Democratic Party | 49 | |
Republican Party | 114 | |
Total | 120 |
The following widget shows up to 25 pieces of legislation in the 2021 legislative session that most recently passed both chambers of the legislature, were signed by the governor, or were approved by the legislature in a veto override. If no bills are displayed below, no legislation met these criteria in 2021. This information is provided by BillTrack50.
Redistricting is the process of enacting new district boundaries for elected offices, particularly for offices in the U.S. House of Representatives and state legislatures.
Template loop detected: Redistricting in Missouri after the 2020 census
Template loop detected: Redistricting in Missouri after the 2020 census Click here for more information.
Missouri's eight United States representatives and 197 state legislators are all elected from political divisions called districts. District lines are redrawn every 10 years following completion of the United States census. Federal law stipulates that districts must have nearly equal populations and must not discriminate on the basis of race or ethnicity.
To learn more about the redistricting process in Missouri after the 2020 census, click here.
A standing committee of a state legislature is a committee that exists on a more-or-less permanent basis, from legislative session to session, that considers and refines legislative bills that fall under the committee's subject matter.
At the beginning of the 2021 legislative session, there were 89 standing committees in Missouri's state government, including 20 joint legislative committees, 18 state Senate committees, and 43 state House committees.
In every state but Delaware, voter approval is required to enact a constitutional amendment. In each state, the legislature has a process for referring constitutional amendments before voters. In 18 states, initiated constitutional amendments can be put on the ballot through a signature petition drive. There are also many other types of statewide measures.
The methods in which the Missouri Constitution can be amended:
The Missouri Constitution can be amended via three different paths—a citizen-initiated process, a legislative process, and a state constitutional convention.
An initiated constitutional amendment is a citizen-initiated ballot measure that amends a state's constitution. Eighteen (18) states allow citizens to initiate constitutional amendments.
In Missouri, the number of signatures required for an initiated constitutional amendment is based on the number of votes cast for governor in the state's most recent gubernatorial election. In two-thirds of Missouri's congressional districts, proponents must collect signatures equal to 8% of the gubernatorial vote for initiated constitutional amendments. A simple majority vote is required for voter approval.
A simple majority vote is required during one legislative session for the Missouri General Assembly to place a constitutional amendment on the ballot. That amounts to a minimum of 82 votes in the Missouri House of Representatives and 18 votes in the Missouri State Senate, assuming no vacancies. Amendments do not require the governor's signature to be referred to the ballot.
According to Section 3a of Article XII of the Missouri Constitution, a question about whether to hold a state constitutional convention is to automatically appear on the state's ballot every 20 years starting in 1942. Missouri is one of 14 states that provides for an automatic constitutional convention question.
The table below shows the last and next constitutional convention question election years:
State | Interval | Last question on the ballot | Next question on the ballot |
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Missouri | 20 years | 2022 | 2042 |
2022 measures:
Certified:
2021 measures:
Below is a list of measures that were referred to the 2021 ballot by the legislature.
Certified:
No measures to list
The table below depicts the historical trifecta status of Missouri.
Missouri Party Control: 1992-2024
Eight years of Democratic trifectas • Twelve years of Republican trifectas
Scroll left and right on the table below to view more years.
Year | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 |
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Governor | R | D | D | D | D | D | D | D | D | D | D | D | D | R | R | R | R | D | D | D | D | D | D | D | D | R | R | R | R | R | R | R | R |
Senate | D | D | D | D | D | D | D | D | D | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R |
House | D | D | D | D | D | D | D | D | D | D | D | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R |
Between 1992 and 2020, the Missouri State Senate was controlled for periods of time by both the Democratic and Republican parties. The table below shows the partisan history of the Missouri State Senate following every general election from 1992 to 2020. All data from 2006 or earlier comes from Michael Dubin's Party Affiliations in the State Legislatures (McFarland Press, 2007). Data after 2006 was compiled by Ballotpedia staff.
Missouri State Senate election results: 1992-2020
Year | '92 | '94 | '96 | '98 | '00 | '02 | '04 | '06 | '08 | '10 | '12 | '14 | '16 | '18 | '20 |
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Democrats | 20[1] | 19 | 19 | 18 | 17* | 14 | 11 | 13 | 11 | 8 | 10 | 9 | 9 | 10 | 10 |
Republicans | 13 | 15 | 15 | 16 | 17 | 20 | 23 | 21 | 23 | 26 | 24 | 25 | 25 | 24 | 24 |
Other | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
*Since no party had majority control, leadership of the chamber was split between the two parties.
From 1992 to 1998, the Democratic Party held majorities, the largest being from 1992 to 1994 when Democrats had a seven-member majority. The Democrats majority in the state Senate decreased between 1992 and 2000. In 2001, Republicans established a majority in the chamber after Republicans won special elections in January of that year. Before the special elections in 2001, the chamber was tied at 17-17 with chamber leadership split between the two major parties.[2]
Republicans increased their majority in elections between 2002 and 2020. Republicans held their largest majority following the 2010 elections with an 18-seat advantage. From 2008 to 2020, Senate Republicans held a supermajority that allowed the chamber to override gubernatorial vetoes. The Republican gains from 2010 to 2014 were in line with a national trend toward Republican state legislatures during the presidency of Barack Obama (D). From 2009 to 2017, Democrats experienced losses in state legislative elections, totaling 968 seats altogether.
Between 1992 and 2020, the Missouri House of Representatives was controlled for periods of time by both the Democratic and Republican parties. Democrats controlled the state House from 1992 to 2000 and Republicans controlled it from 2002 to 2020. The table below shows the partisan history of the Missouri House of Representatives following every general election from 1992 to 2020. All data from 2006 or earlier comes from Michael Dubin's Party Affiliations in the State Legislatures (McFarland Press, 2007). Data after 2006 was compiled by Ballotpedia staff.
Missouri House of Representatives election results: 1992-2020
Year | '92 | '94 | '96 | '98 | '00 | '02 | '04 | '06 | '08 | '10 | '12 | '14 | '16 | '18 | '20 |
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Democrats | 100 | 87 | 88 | 86 | 87 | 73 | 66 | 71 | 74 | 57 | 53 | 46 | 46 | 47 | 49 |
Republicans | 62 | 76 | 75 | 76 | 76 | 90 | 97 | 92 | 89 | 106 | 110 | 117 | 117 | 116 | 114 |
Other | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
From 1992 to 2000, House Democrats held majorities in the chamber, the largest being from 1992 to 1994 when Democrats had a 38-member majority. House Democrats maintained their majority between 1994 and 2000 with little change in the chamber's partisan balance.
Republicans took control of the chamber in 2002 with a 17-seat advantage. The Republican majority has increased since 2002. Republicans held their largest majority following the 2014 elections with a 71-seat advantage. House Republicans gained a supermajority in 2012, which allowed them to override gubernatorial vetoes. The Republican gains from 2010 to 2016 were in line with a national trend toward Republican state legislatures during the presidency of Barack Obama (D). From 2009 to 2017, Democrats experienced losses in state legislative elections, totaling 968 seats altogether.
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