2020 Missouri Senate election

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. 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.

District
Results of the 2020 Missouri State Senate elections by district:

Close races
Districts where the margin of victory was under 10%:
 * 1)  District 15, 7.98% 
 * 2)  District 17, 6.74% 
 * 3)  District 19, 3.27%