| Election Name: | Missouri Senate elections, 2020 |
| Country: | Missouri |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 2018 Missouri Senate election |
| Previous Year: | 2018 |
| Next Election: | 2022 Missouri Senate election |
| Next Year: | 2022 |
| Seats For Election: | 17 of Missouri's 34 Senate seats in the Missouri Senate. |
| Leader1: | Dave Schatz |
| Party1: | Republican Party (United States) |
| Leader Since1: | January 9, 2019 |
| Leaders Seat1: | 26th district |
| Seats Before1: | 24 |
| Seats After1: | 24 |
| Popular Vote1: | 731,386 |
| Percentage1: | 53.38% |
| Leader2: | Gina Walsh |
| Party2: | Democratic Party (United States) |
| Leader Since2: | July 7, 2016 |
| Leaders Seat2: | 13th district |
| Seats Before2: | 10 |
| Seats After2: | 10 |
| Popular Vote2: | 598,526 |
| Percentage2: | 43.68% |
| Map Size: | 300px |
| President pro tempore | |
| Before Election: | Dave Schatz |
| Before Party: | Republican Party (United States) |
| After Election: | Dave Schatz |
| After Party: | Republican Party (United States) |
The 2020 Missouri Senate elections were held on November 3, 2020, to elect the 17 Missouri State Senators to the Missouri Senate. Half of the Senate's thirty-four seats are up for election every two years, with each Senator serving four-year terms.[1] The last time that these seats were up for election was the 2016 Missouri Senate election, and the next time that these seats will be up for election will be the 2024 Missouri State Senate election.
| Party | Candi- dates | Votes | Seats | ||||
|---|---|---|---|---|---|---|---|
| No. | % | No. | +/– ! | % | |||
| 14 | 731,386 | 53.38% | 10 | 58.82% | |||
| 13 | 598,526 | 43.68% | 7 | 41.18% | |||
| 2 | 24,717 | 1.80% | 0 | 0.00% | |||
| 1 | 15,383 | 1.12% | 0 | 0.00% | |||
| 3 | 90 | 0.00% | 0 | 0.00% | |||
| Total | 29 | 1,370,102 | 100.00% | 17 | 100.00% | ||
Results of the 2020 Missouri State Senate elections by district:[3]
| scope=col rowspan=3 | District | scope=col colspan=2 | Republican | scope=col colspan=2 | Democratic | scope=col colspan=2 | Others | scope=col colspan=2 | Total | scope=col rowspan=3 | Result | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| scope=col colspan=2 style="background:" | ! | scope=col colspan=2 style="background:" | ! | scope=col colspan=2 | ! | scope=col colspan=2 | |||||||||
| scope=col data-sort-type="number" | Votes ! | scope=col data-sort-type="number" | % ! | scope=col data-sort-type="number" | Votes ! | scope=col data-sort-type="number" | % ! | scope=col data-sort-type="number" | Votes ! | scope=col data-sort-type="number" | % ! | scope=col data-sort-type="number" | Votes ! | scope=col data-sort-type="number" | % |
| District 1 | 43,495 | 44.57% | 54,095 | 55.43% | - | - | 97,590 | 100.00% | Democratic hold | ||||||
| District 3 | 65,686 | 100.00% | - | - | - | - | 65,686 | 100.00% | Republican hold | ||||||
| District 5 | 8,349 | 12.90% | 56,379 | 87.10% | - | - | 64,728 | 100.00% | Democratic hold | ||||||
| District 7 | - | - | 70,586 | 82.09% | 15,401 | 17.91% | 85,987 | 100.00% | Democratic hold | ||||||
| District 9 | 11,026 | 17.64% | 51,463 | 82.36% | - | - | 62,489 | 100.00% | Democratic hold | ||||||
| District 11 | - | - | 50,065 | 100.00% | - | - | 50,065 | 100.00% | Democratic hold | ||||||
| District 13 | - | - | 64,191 | 87.56% | 9,122 | 12.44% | 73,313 | 100.00% | Democratic hold | ||||||
| District 15 | 61,172 | 53.99% | 52,132 | 46.01% | - | - | 113,304 | 100.00% | Republican hold | ||||||
| District 17 | 45,141 | 46.62% | 51,690 | 53.38% | - | - | 96,831 | 100.00% | Democratic hold | ||||||
| District 19 | 50,570 | 51.60% | 47,367 | 48.33% | 72 | 0.07% | 98,009 | 100.00% | Republican hold | ||||||
| District 21 | 61,698 | 79.82% | - | - | 15,595 | 20.17% | 77,293 | 100.00% | Republican hold | ||||||
| District 23 | 57,988 | 57.25% | 43,306 | 42.75% | - | - | 101,294 | 100.00% | Republican hold | ||||||
| District 25 | 58,215 | 100.00% | - | - | - | - | 58,215 | 100.00% | Republican hold | ||||||
| District 27 | 63,644 | 76.88% | 19,135 | 23.12% | - | - | 82,779 | 100.00% | Republican hold | ||||||
| District 29 | 75,582 | 100.00% | - | - | - | - | 75,582 | 100.00% | Republican hold | ||||||
| District 31 | 63,929 | 71.42% | 25,584 | 28.58% | - | - | 89,513 | 100.00% | Republican hold | ||||||
| District 33 | 64,891 | 83.81% | 12,533 | 16.19% | - | - | 77,424 | 100.00% | Republican hold | ||||||
| Total | 731,386 | 53.38% | 598,526 | 43.68% | 40,190 | 2.93% | 1,370,102 | 100.00% |
Districts where the margin of victory was under 10%: