2020Final results
2020 election for Missouri Senate District 1
Missouri State Senate · Missouri
Doug Beck (D) won with 55.4% of the vote, defeating David Lenihan (R) by 10.9 points.
Doug BeckDemocrat · winner
55.4%54,095
David LenihanRepublican
44.6%43,495
97,590 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET
The seat over time
D − R margin in this seat's races around 2020
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET