1986Final results
1986 election for Missouri House District 78
Missouri House of Representatives · Missouri
Mary M. Haganharrell (D) won with 68.5% of the vote, defeating Grant Keys (R) by 37.1 points.
Mary M. HaganharrellDemocrat · winner
68.5%4,982
Grant KeysRepublican
31.5%2,286
7,268 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 1986
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET