1980Final results
1980 election for Missouri Senate District 25
Missouri State Senate · Missouri
Nelson Tinnin (D) won with 63.1% of the vote, defeating Robert Richardson (R) by 26.2 points.
Nelson TinninDemocrat · winner · incumbent
63.1%30,913
Robert RichardsonRepublican
36.9%18,091
49,004 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 1980
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET