# 2020 Missouri elections

Elections in Missouri :
Federal government
Presidential elections
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1824
1828
1832
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1840
1844
1848
1852
1856
1860
1864
1868
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1876
1880
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1892
1896
1900
1904
1908
1912
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1920
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1928
1932
1936
1940
1944
1948
1952
1956
1960
1964
1968
1972
1976
1980
1984
1988
1992
1996
2000
2004
2008
2012
2016
2020
2024
Missouri bellwether
Presidential primaries
Democratic
2000
2004
2008
2012
2016
2020
2024
Republican
2000
2004
2008
2012
2016
2020
2024
U.S. Senate
1821
1825
1827
1830
1833
1836
1839
1842
1843 sp
1845
1849
1851
1857
1857 sp
1861
1863
1863 sp
1868
1871 sp
1874
1879
1879 sp
1881
1885
1887
1891
1893
1897
1899
1903
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1911
1911
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1918 sp
1920
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1926
1926 sp
1928
1932
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1960 sp
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1986
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2002 sp
2004
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2010
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2016
2018
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2024
2028
U.S. House of Representatives
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1822
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1828
1831
1832–33
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1839
AL sp
1840
1842
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1846
AL sp
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1st sp
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3rd sp
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5th sp
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7th sp
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14th sp
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1st sp
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8th sp
1900
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12th sp
1904
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6th sp
1912
1914
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1918
10th sp
1920
1921
4th sp
1922
1924
1926
11th sp
1928
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4th sp
1930
1931
7th sp
1932
1934
1936
1938
1940
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1943
6th sp
1944
1946
1948
10th sp
1950
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11th sp
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4th sp
1960
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9th sp
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6th sp
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8th sp
1998
2000
2002
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2013
8th sp
2014
2016
2018
2020
2022
2024 :
State government
State elections
2008
2010
2012
2014
2016
2018
2020
2022
Gubernatorial elections
1820
1824
1825 sp
1828
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1836
1840
1844
1848
1852
1856
1857 sp
1860
1864
1868
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1874
1876
1880
1884
1888
1892
1896
1900
1904
1908
1912
1916
1920
1924
1928
1932
1936
1940
1944
1948
1952
1956
1960
1964
1968
1972
1976
1980
1984
1988
1992
1996
2000
2004
2008
2012
2016
2020
2024
Lieutenant gubernatorial elections
1820
1824
1828
1832
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1840
1844
1848
1852
1856
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1874
1876
1880
1884
1888
1892
1896
1900
1904
1908
1912
1916
1920
1924
1928
1932
1936
1940
1944
1948
1952
1956
1960
1964
1968
1972
1976
1980
1984
1988
1992
1996
2000
2004
2008
2012
2016
2020
2024
Secretary of State elections
2012
2016
2020
2024
Attorney General elections
2012
2016
2020
2024
State Treasurer elections
2012
2016
2020
2024
State Auditor elections
2010
2014
2018
2022
Senate elections
2010
2012
2014
2016
2018
2020
2022
2024
House of Representatives elections
2010
2012
2014
2016
2018
2020
2022
2024
2026 :
Ballot measures
1999
Proposition B
2004
Amendment 2
2006
Amendment 2
2018
Proposition A
2020
Amendment 2
2022
Amendment 3
2024
Amendment 3 :
Columbia
Mayoral elections
2016
2019
2022 :
Jefferson City
Mayoral elections
2016
2019
2022 :
Joplin
Mayoral elections
2003
2007
2011
2015
2019
2023 :
Kansas City
Mayoral elections
2003
2007
2011
2015
2019
2023 :
Springfield
Mayoral elections
2021 :
St. Louis
Mayoral elections
1973
1977
1981
1985
1989
1993
1997
2001
2005
2009
2013
2017
2021
2025
Board of Aldermen elections
2023 :
vte :
Missouri state elections in 2020 were held on Tuesday, November 3, 2020. Aside from its presidential primaries held on March 10, its primary elections were held on August 4, 2020.
In addition to the U.S. presidential race, Missouri voters will elect the Governor of Missouri, four of Missouri's other executive officers, all of its seats to the House of Representatives, all of the seats of the Missouri House of Representatives, and 17 of 34 seats in the Missouri State Senate. Neither of the state's two U.S. Senate seats are up for election this year, but there are also two ballot measures which will be voted on, in addition to one voted on in the August 4 primaries.
To vote by mail, registered Missouri voters had to request a ballot by October 21, 2020.

## Federal offices
### President of the United States

Missouri has 10 electoral votes in the Electoral College.

### United States House of Representatives

There are 7 U.S. Representatives in Missouri that will be up for election. Another seat is open after the incumbent, Lacy Clay, lost renomination in its Democratic primary.

## State legislature

All 163 seats of the Missouri House of Representatives and 17 of 34 seats of the Missouri State Senate are up for election. Before the election, the composition of the Missouri State Legislature was:
After the election, the composition of the Missouri State Legislature was:

### Primary election
#### Senate District 3 - Republican

Polling
| Poll source | Date(s) administered | Sample size | Margin of error | Joshua Barrett | Elaine Freeman Gannon | Kent Scism | Undecided |
| Remington Research Group/Missouri Scout | June 24–25, 2020 | 500 (LV) | ± 4.3% | 24% | 23% | 19% | 34% |

#### Senate District 5 - Democratic

Polling
| Poll source | Date(s) administered | Sample size | Margin of error | Jeremiah Church | McFarlane Duncan | Megan Elliya Green | William "Bill" Haas | Peter Merideth | Steve Roberts | Michelle Sherod | Undecided |
| Remington Research Group/Missouri Scout | April 1–2, 2020 | 486 (LV) | ± 4.6% | 7% | 1% | 16% | 14% | – | 18% | 9% | 35% |
| Remington Research Group/Missouri Scout | December 4–5, 2019 | 464 (LV) | ± 4.6% | – | 3% | 24% | – | – | 24% | 4% | 45% |
| Remington Research Group/Missouri Scout | August 21–22, 2019 | 501 (LV) | ± 4.5% | – | – | – | – | 20% | 24% | 13% | 43% |
| Remington Research Group/Missouri Scout | August 21–22, 2019 | 501 (LV) | ± 4.5% | – | – | 32% | – | – | 23% | 11% | 34% |
| Remington Research Group/Missouri Scout | August 21–22, 2019 | 501 (LV) | ± 4.5% | – | – | – | – | – | 24% | 21% | 55% |

#### Senate District 13 - Democratic

Polling
| Poll source | Date(s) administered | Sample size | Margin of error | Alan Green | Angela Mosley | Tommie Pierson Jr. | Undecided |
| Remington Research Group/Missouri Scout | June 3–4, 2020 | 545 (LV) | ± 4.2% | 15% | 21% | 19% | 45% |
| Remington Research Group/Missouri Scout | October 16–17, 2019 | 421 (LV) | ± 4.9% | 15% | 18% | 19% | 48% |

#### Senate District 23 - Republican

Polling
| Poll source | Date(s) administered | Sample size | Margin of error | Bill Eigel | Dan O'Connell | Eric Wulff | Undecided |
| Remington Research Group/Missouri Scout | July 8–9, 2020 | 436 (LV) | ± 4.8% | 33% | 8% | 7% | 52% |

#### Senate District 25 - Republican

Polling
| Poll source | Date(s) administered | Sample size | Margin of error | Jason Bean | Stephen Carroll Cookson | Eddy Justice | Jeff Shawan | Undecided |
| Remington Research Group/Missouri Scout | July 8–9, 2020 | 436 (LV) | ± 4.8% | 26% | 11% | 23% | 17% | 23% |
| Remington Research Group/Missouri Scout | July 30–31, 2019 | 438 (LV) | ± 4.7% | – | – | 17% | 16% | 67% |

#### Senate District 27 - Republican

Polling
| Poll source | Date(s) administered | Sample size | Margin of error | Holly Rehder | Kathy Swan | Undecided |
| Remington Research Group/Missouri Scout | July 16–17, 2020 | 414 (LV) | ± 4.9% | 51% | 29% | 20% |
| Remington Research Group/Missouri Scout | August 7–8, 2019 | 520 (LV) | ± 4.3% | 26% | 27% | 48% |

#### Senate District 29 - Republican

Polling
| Poll source | Date(s) administered | Sample size | Margin of error | David Cole | Mike Moon | Undecided |
| Remington Research Group/Missouri Scout | July 25–26, 2020 | 504 (LV) | ± 4.5% | 34% | 37% | 29% |
| Remington Research Group/Missouri Scout | April 21–23, 2020 | 536 (LV) | ± 4.2% | 15% | 25% | 60% |
| Remington Research Group/Missouri Scout | July 17–18, 2019 | 532 (LV) | ± 4.3% | 14% | 21% | 65% |

#### Senate District 31 - Republican

Polling
| Poll source | Date(s) administered | Sample size | Margin of error | Jack Bondon | Rick Brattin | Bill Yarberry | Undecided |
| Remington Research Group/Missouri Scout | July 21–23, 2020 | 403 (LV) | ± 4.9% | 40% | 34% | 6% | 20% |
| Remington Research Group/Missouri Scout | April 15–16, 2020 | 419 (LV) | ± 4.76% | 16% | 18% | 5% | 60% |

#### Senate District 33 - Republican

Nominee
* Karla Eslinger, state representative for District 155
Eliminated in primary
* Van Kelly
* Robert Ross
Polling
| Poll source | Date(s) administered | Sample size | Margin of error | Karla Eslinger | Van Kelly | Robert Ross | Undecided |
| Remington Research Group/Missouri Scout | July 27–29, 2020 | 503 (LV) | ± 4.5% | 20% | 17% | 39% | 24% |
| Missouri Scout | July 12–13, 2020 | 456 (LV) | ± 4.5% | 31% | 12% | 36% | 31% |
| Remington Research Group/Missouri Scout | May 6–7, 2020 | 568 (LV) | ± 4.0% | 15% | 12% | 16% | 57% |
| Remington Research Group/Missouri Scout | July 24–25, 2019 | 510 (LV) | ± 4.5% | – | 16% | 15% | 69% |

#### Senate District 33 - Democratic

Nominee
* Tammy Harty

### General election
#### Senate District 1

Polling
| Poll source | Date(s) administered | Sample size | Margin of error | Doug Beck (D) | David Lenihan (R) | Undecided |
| Remington Research Group/Missouri Scout | September 9–10, 2020 | 646 (LV) | ± 3.8% | 43% | 36% | 21% |
Results
Missouri state senate district 1 election, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Doug Beck | | | |
| | Republican | David Lenihan | | | |

#### Senate District 15

Polling
| Poll source | Date(s) administered | Sample size | Margin of error | Andrew Koenig (R) | Deb Lavender (D) | Undecided |
| Remington Research Group/Missouri Scout | October 7–8, 2020 | 644 (LV) | ± 3.8% | 45% | 49% | 6% |
| Remington Research Group/Missouri Scout | August 19–20, 2020 | 585 (LV) | ± 4% | 43% | 43% | 14% |
| Remington Research Group/Missouri Scout | May 29–30, 2019 | 648 (LV) | ± 3.8% | 50% | 35% | 15% |
Hypothetical polling in District 15 :
| Poll source | Date(s) administered | Sample size | Margin of error | Andrew Koenig (R) | Mark Osmack (D) | Undecided |
| Remington Research Group/Missouri Scout | May 29–30, 2019 | 648 (LV) | ± 3.8% | 52% | 33% | 15% |
Results
Missouri state senate district 15 election, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Andrew Koenig | | | |
| | Democratic | Deb Lavender | | | |

#### Senate District 19

Polling
| Poll source | Date(s) administered | Sample size | Margin of error | Caleb Rowden (R) | Judy Baker (D) | Undecided |
| Remington Research Group/Missouri Scout | October 20–22, 2020 | 489 (LV) | ± 4.4% | 48% | 48% | 4% |
| Remington Research Group/Missouri Scout | August 26–27, 2020 | 536 (LV) | ± 4.2% | 47% | 42% | 11% |
Hypothetical polling in District 19 :
| Poll source | Date(s) administered | Sample size | Margin of error | Caleb Rowden (R) | Michela Skelton (D) | Undecided |
| Remington Research Group/Missouri Scout | September 25–27, 2019 | 446 (LV) | ± 4.7% | 50% | 44% | 6% |
Results
Missouri state senate district 19 election, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Caleb Rowden | | | |
| | Democratic | Judy Baker | | | |

#### Senate District 33

Missouri state senate district 33 election, 2020 :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Karla Eslinger | | | |
| | Democratic | Tammy Harty | | | |

## Ballot measures

Missouri Amendment 2, Medicaid Expansion passed in the August 4 primary.
Missouri Amendment 3, Redistricting Process and Criteria, Lobbying, and Campaign Finance Amendment is to amend the state constitution to lower thresholds for lobbyists' gifts, lower campaign contribution limits for state senate campaigns and reverse changes to the redistricting process brought about by the passage of 2018's Missouri Amendment 1, known as "Clean Missouri". That amendment (aimed to prevent gerrymandering) delegated redistricting to a nonpartisan state demographer and citizens' commission as opposed to the status quo ante of it being left to a bipartisan commission appointed by the governor.

### Polling
#### Primary election

Amendment 2
| Poll source | Date(s) administered | Sample size | Margin of error | For Missouri Amendment 1 | Against Missouri Amendment 1 | Undecided |
| Remington Research Group/Missouri Scout | April 28–29, 2020 | 1,356 (LV) | ± 2.6% | 54% | 32% | 14% |
| Human Agency/Missouri Scout | December 20–24, 2019 | 415 (RV) | ± 5% | 46% | 33% | 21% |
| Human Agency/Missouri Scout | November 17–20, 2020 | 400 (RV) | ± 5% | 41% | 29% | 29% |
| Remington Research Group/Missouri Scout | November 12–13, 2019 | 1,641 (LV) | ± 2.4% | 57% | 25% | 18% |
| Human Agency/Missouri Scout | September 16–18, 2019 | 825 (RV) | ± 4.0% | 42% | 25% | 33% |
| Remington Research Group/Missouri Scout | September 4–5, 2019 | 910 (LV) | ± 3.3% | 44% | 33% | 23% |
| Remington Research Group/Missouri Scout | June 12–13, 2019 | 986 (LV) | ± 3.2% | 40% | 37% | 23% |

#### General election

Amendment 1
| Poll source | Date(s) administered | Sample size | Margin of error | For Missouri Amendment 1 | Against Missouri Amendment 1 | Undecided |
| YouGov/SLU | September 24 – October 7, 2020 | 931 (LV) | ± 3.9% | 51% | 29% | 20% |
| Remington Research Group/Missouri Scout | September 20–21, 2020 | 1,046 (LV) | ± 3% | 60% | 26% | 14% |
Amendment 3
| Poll source | Date(s) administered | Sample size | Margin of error | For Missouri Amendment 3 | Against Missouri Amendment 3 | Undecided |
| Remington Research Group/Missouri Scout | October 28–29, 2020 | 1,010 (LV) | ± 3% | 29% | 56% | 15% |
| Remington Research Group/Missouri Scout | October 14–15, 2020 | 1,010 (LV) | ± 3% | 28% | 50% | 22% |
| YouGov/SLU | September 24 – October 7, 2020 | 931 (LV) | ± 3.9% | 35% | 43% | 23% |
| Remington Research Group/Missouri Scout | September 20–21, 2020 | 1,046 (LV) | ± 3% | 44% | 30% | 26% |
| Remington Research Group/Missouri Scout | August 12–13, 2020 | 1,112 (LV) | ± 3.0% | 46% | 19% | 35% |