1986Flipped from RepublicanFinal resultsIncumbent defeated
1986 election for Connecticut Senate District 12
Connecticut State Senate · Connecticut
Thomas J. Sullivan (D) won with 51.3% of the vote, defeating Richard S. Eaton (R) by 2.7 points, a seat Republicans won last time.
Thomas J. SullivanDemocrat · winner
51.3%15,233
Richard S. EatonRepublican · incumbent
48.7%14,439
29,672 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