1984Final results
1984 election for Missouri House District 66
Missouri House of Representatives · Missouri
Matt Oneill (D) won with 52.0% of the vote, defeating Herb Morisse (R) by 4.1 points.
Matt OneillDemocrat · winner
52.0%7,401
Herb MorisseRepublican
48.0%6,824
14,225 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 1984
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET